14 best ph meters

Product description

Simply the most reliable pocket pH tester with the best value for general-purpose pH testing e.g. hydroponics, horticulture, pools and spas, water treatment, beverage making, education, environmental monitoring, etc. Up to 3 points of Auto. calibration and 0 to 50˚C Auto temperature compensation (ATC), 0. 1 pH Accuracy with 0 to 14. 0 pH measuring range; Auto. recognition and indication of stable values improves repeatability, saving you the trouble of guessing when to manually hold measurement. PH20 comes with a complete kit of premixed calibration solutions (4. 00 and 7. 00), 4 AAA batteries, and a lanyard all in a portable carrying case. Smart Self-diagnosis, warning of incorrect buffer solutions and incorrect calibrations. IP67 water-resistant. Up to 2000 hours' operation powered by AAA alkaline batteries. The product is CE and RoHS certified, and is manufactured under an ISO 9001: 2015 certified quality system.

• Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)
• Backed by Apera quality pH sensor with low impedance, ensuring high response rate
• Comes in a rugged carrying case with pH 4&7 buffers and a lanyard
• Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement
• Up to 2000 hours' continuous operation, powered by AAA batteries

User questions & answers

Question:	I will be using this meter once a month. Do I need storage solution for the probe
Answer:	Storing the probe in the storage solution helps keep the probe's sensitivity and accuracy. So it's a recommended practice. While storing the probe without any solution will not damage the probe, it's just going to cause the probe to lose its sensitivity and accuracy temporarily. Store the probe in the storage solution again for about 10 minutes, the sensitivity and accuracy can be restored.
Question:	Can anyone confirm if this comes pre calibrated
Answer:	The tester has been calibrated before they went out of the factory. But since there is a time gap before they reach our customers, we recommend doing the calibration with the included premixed buffer solutions before your first use.Thanks for your interest!
Question:	Can this be used to analyze urine
Answer:	Yes, it can tests urine with no problem. You can use the probe cap as a container for the urine.
Question:	How often does this pH meter need to be re-calibrated and/or how can I tell when it needs to be re-calibrated
Answer:	The manufacturer recommends keeping the device probe in a neutral storage solution; the protective tip case/container actually has a 'fill' line for guidance, and it is designed to hold a liquid safely when stored as indicated -- If someone uses distilled or deionized water by itself as a storage solution, the salts contained in the probe tip will dissipate and the probe will then need to be replaced--about $25, plus a fine headache trying to get it right. If you are out of storage solution keeping the probe wet somehow is better than dry--but don't store without the specialized solution for more than a day or so; these are typically $10-$13 for 100ml - 250ml size bottles on Amazon.

Product features

Fluid Precision since 1991

Apera Instruments PH20 Value pH Tester Kit simply provides reliable and quick pH measurements for general water solutions' pH testing, such as hydroponics, horticulture, pools and spas, beverage making, education, aquarium and aquaculture, water treatment, environmental monitoring, etc.

Intelligent Functions

• 1-3 point automatic calibration with ATC
• Auto recognition and reminder (a smiley face) of stable readings takes the guesswork out of getting a stable measurement.
• Low battery alarm; Auto. power off if no operation for 8 minutes
• Supports switch of pH standard series (USA or NIST) and temperature unit (˚F or ˚C)

Sensor Shield

The latest PH20 probe all come with the sensor shield that protects the sensitive glass membrane from accidental damage.

High-sensitivity pH Probe

Apera's proprietary lithium glass pH sensor lays the foundation for quick and reliable pH measurements.

Large Clear LCD Display

Simultaneous temperature display along with stable reading indicator and completed calibration icons.

Powered by AAA batteries

Up to 2000 hours of operation. Installation: All 4 pieces of batteries' positive sides (+) must face up.

• 【How to use calibration】Press CAL for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6.86, 4, and 9.18 to complete the calibration.
• 【Mini Size】The mini size ph meter we designed allows you to easily put it in your pocket, so you can take measurements anytime, anywhere. It can help you test it whether you take it to the pool, on a trip, to the beach or camping.
• 【Family Essentials】As a tool to improve the quality of life. Can be used to test drinking water, swimming pools, PH balance in aquarium, RO system, spa or hydroponics. Basically all the environments that need to test PH value can use this tester to get accurate data.
• 【High Accuracy】ph tester has a sensitive electrode sensor ,simply press "ON", It only takes a few seconds for your result to appear on screen.read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading.
• 【Automatic Temperature Compensation】No more need to take care about the temperature of testing liquid,as the Ph Meter Has an Auto Temprature Compensation Feature That Adjusts to Water Temperatures and Water Quality.

User questions & answers

Question:	Do the calibration solutions come with the meter
Answer:	Yes but there is no need as they come already calibrated. The solutions are for calibration long term
Question:	How do I get warranty support? I have had this for 3 months and it quit working, just shows zero with an occasional flash of random numbers
Answer:	Overall it’s not a great product when it fails for you Your battery could also be bad as they go fast and you may have immersed entire unit in solution which an cause that to happen

Product features

Instructions for use of PH calibration powder:

Calibration powder: pH standard solid substance. It can be used after adding water. Suitable for the calibration of any type of ph meter. Each package can prepare 250ML standard solution.

Matters needing attention:

PH meter has been calibrated before delivery, the buyer does not need to re-calibrate after receiving the goods!

In the following cases, the PH meter must be re-calibrated:

1. Has been used for a long time after calibration;

2. Special electrode use Frequently;

3. The measurement accuracy requirements are relatively high.

Battery installation:

If the backlight brightness drops significantly or the display value is blurred, the battery should be replaced. When replacing the battery, just pull out the battery compartment and replace it. NoteThe polarity of the battery.

Product description

High Accurate Digital PH Meter

Do you want to know the health of drinking water?



Still worried about the water in the swimming pool?



Test with our pH meter! Accurate pH meter makes your living environment better!



Color:YELLOW



Digital PH Meter Water Tester Product Features:

1.This pH meter sensitive and easy to use, just wait a few seconds and reading is stable.



2.Auto-off function and low-battery indicator.



3.The pH meter can easily be re-calibrated in the field.



4.The pH tester for aquarium, pool, food & beverage, drinking water etc.



How To Use :

1. Remove protective cap.



2. First rinse the electrode with distilled water and suck it with filter paper.



3. Turn the meter on by pressing “ON/OFF” key;



4. Immerse the pH meter electrode in the solution to be tested (should not be over the immersion line;



5. Stir gently and wait around 30 seconds till the reading stabilizes.



6. After finishing, clear the electrode with pure water, turn the meter off by pressing “ON/OFF” key.



7. Always replace the protective cap after use.



Specifications:

Measuring range: 0.00-14.00 pH



Resolution: 0.01 pH



Accuracy: 0.01 pH



Batteries: 2X 1.5V LR44 (included)



Automatic temperature compensation: 0-80℃(32-176℉)



Dimensions: 1.2x0.60x6.00 inch



Net Weight: 52g/1.83 oz



Package Includes:

1 x PH Meter



1 x Carrying case



3 x PH buffer powder



1 x User's manual

• ✔ AUTO CALIBRATION: The PH meter has an auto temprature compensation feature that adjusts to water temperatures and water quality to give pH readings almost instantly. As well, you can calibrate the tester with one touch button using Buffer Powder.
• ✔ FAST AND HIGH ACCURACY: Our Digital PH Meter can ensure your pool, general hydroponics ph or even drinking water has a perfect pH balance and safe for use with Tester precision pH accuracy. Tester has a sensitive electrode sensor to read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading.
• ✔ AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F).
• ✔ WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory uses.Suitable for testing the pH of drinking water, swimming pools, aquariums, reverse osmosis systems, spas or hydroponics; ideal for testing water, swimming pools, aquariums, spas, hydroponics, food, wine and beer, etc.
• ✔ MAKE YOU SATISFIED WITH THE PRODUCTS: Come with 1x PH meter, 1x user manual, 2x 1.5V LR44 button cells(build-in), 3x PH Buffer Powders.

User questions & answers

Question:	Could these be used for testing the pH in a jar of canned food? Why or why not? Would it give you a reading to the .01 degree
Answer:	it's a general purpose ph meter and would suffice for most typical purposes. you can test any liquid or similar that you can dip it into. if you want something that's lab grade I mean common sense is pay more for a better one. so the question is do you have a requirement for something that may be better, or will this do for you at a pretty cheap price see less
Question:	Can i put the ph / tds tester in the swimming pool and aquarium? is it waterproof all over
Answer:	No, Don't put into the water, because there is a battery cover, it's not waterproof, and the water level should not be immersed in the immersion line during the test.
Question:	Does the pH meter work for a saltwater swimming pool
Answer:	Yes but these ph meters do not work very well in general. Better to either use the test strips or a reagent pool test kit
Question:	Can I possibly stick this meter in soil and it give me an accurate reading
Answer:	No, the reading is not displayed in this way, because this is the aquarium ph meters of the test liquid

• Ideal for residential or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics.
• Advanced technology makes the test result fast and accurate.Easy calibration (pH4.00, pH6.86).
• Pocket size, lightweight, high quality.
• With Automatic Temperature Compensation (ATC). Adjust to water temperature and give pH reading almost instantly.
• What You Get: VIVOSUN pH meter, user manual, 2 x 1.5V button cells (built in), 3 x pH buffer powders, 1-year warranty and friendly customer service.

User questions & answers

Question:	How do I submit a warranty claim
Answer:	As long as you are trying to get it replaced in the time frame of the warranty just pull it up online and follow instructions
Question:	Would this be a good tool for an aquarium
Answer:	Sure it will read the Ph for your tank
Question:	What do you use to clean electrode
Answer:	Instructions say to use distilled water to clean electrodes
Question:	Does this test soil to
Answer:	Sort of, in that you could test the runoff but you can’t stick this probe in the dirt directly.

Product features

VIVOSUN PH Meter Digital PH Tester Pen for Water

How to use? Step 1: Remove the protective cap Step 2: Clean the electrode in distilled water and dry it Step 3: Turn the meter on by pressing the ON/OFF key Step 4: Immerse the pH meter electrode in the solution to be tested Step 5: Stir gently and wait for the display stabilizes Step 6: After finished, clean the electrode in distilled water and turn the meter off by pressing the ON/OFF key

Product Features

• Measure Range : 0.00 - 14.00 pH
• Resolution : 0.01 pH
• Accuracy : 0.05 pH
• Calibration: Two Points Automatic Calibration Button
• Power Supply: 2 x 1.5V LR44 Button Battery (keep using more than 500 hours)
• Dimension: 155 mm * 31 mm * 18 mm
• Weight: 50 g

Product description

High Accurate Digital PH Meter

Do you want to know the health of drinking water?

Still worried about the water in the swimming pool?

Test with our pH meter! Accurate pH meter makes your living environment better!

Simple Calibration

PH meter is pre-calibrated, so you can use it as soon as you receive it.

We provide with three pH buffer powders for conditions need a recalibration, such as long periods of inactivity, very frequent use in different solutions, testing accuracy highly required,

the calibration button was pushed and electrode exposed to air for an extended period of time.

You can do recalibration easily by yourself following the manual inside the packing box.

Specifications:

◆Measuring range: 0.00-14.00 pH

◆Resolution: 0.01 pH

◆ Accuracy: 0.01 pH

◆Batteries: 2X 1.5V LR44 (included)

◆ Automatic temperature compensation: 0-80℃(32-176℉)

◆ Dimensions: 1.2x0.60x6.00 inch

◆Net Weight: 52g/1.83 oz

Package Includes:

🍈1 x PH Meter

🍈 x Carrying case

🍈3 x PH buffer powder

🍈 1 x User's manual

• Ɣ [Accurate Test] With a sensitive electrode sensor, ph tester with 0-14.0 measuring range could read accurate pH levels quickly and easily. This accurate pH tester Kit (0.01 Resolution) is accurate that it could test accurately within ± 0.01 pH.Enclosed is the detailed clear manual will show you how to use it.
• Ɣ [Automatic Temperature] When the temperature of the sample solution is different from the standard solution,this PH meter has built-in automatic temperature compensation system (ATC) which can accurately determine the PH value of the sample at temperature 0° c-80 °C (32°F-176 °F).
• Ɣ [Simple Calibration] Three kinds of pH buffer powder are attached for conditions requiring recalibration, such as long period of inactivity, pH meter is in great need of test accuracy, press the calibration button and hold the pH pen at the pH buffer powder for 1 minute, after which it can be automatically calibrated.
• Ɣ [Wide application] Pocket-size PH meters are ideal for home and laboratory testing.This ph pen can test ph and is ideal for multiple scenarios ideal for testing water, swimming pools, aquariums, spas, hydroponics, wine and beer.
• Ɣ [Exciting products] Lightweight design, it's easy to carry.1× pH Meter , 1× Carrying case, 3× Calibration packets, 1× User manual.

• ▶ 【Notification】Calibrate once per week if you often test solution of PH 10, or once per half month for neutral solutions. The 250ml calibration solution for multiple uses (10ml or so each time). Then rinse the electrode with pure water before next test. Rinse and rest 3-5 min before conversing from strong acid to strong alkaline and vice versa.
• ▶ 【Automatic Calibration】 We make your job faster and easier than ever with this convenient PH tester! With the 3-point calibration procedures, your PH testing devicewill automatically identify the calibration solutions to give you your reading in a snap.
• ▶ 【Automatic Temperature Compensation】 Temperature can affect reading levels, our PH meter's automatic temperature compensation can ensure that you're getting the best possible reading. Unlike other PH metersthat only have a range of 0-50 degree, ours has a even better range of 0-70 degree, so you can test with confidence in any environment.
• ▶ 【Clear Digital Display with Alerts】 Tired of squinting at a small screen to get your readings? Enjoy this PH meter's large, backlit LCD screen that displays the information in an intuitive layout so you can still see even in low visibility situations. When the PH value is lower than 3.5 or higher than 12.5, the white digital display will change to red and flash to alert you.
• ▶ 【User Friendly】 You can easily replace the 2 AAA batteries when it's time, and you can also activate the 15-minute auto-off functionality to save battery. Plus, it even comes with a storage case to keep it safe and protected when you're on the go.

User questions & answers

Question:	Why does the cap contained some condensation
Answer:	The electrode (probe) is with potassium chloride in the factory in order to activate the PH probe for protection. If the protective sponge on the probe cover has dried, you need to add pure water. Otherwise, there may be inaccurate testing and electrode damage, and then it will not function.
Question:	Will this provide an accurate ph test for urine
Answer:	First you must calibrate it, it have 3 packs of powders to calibrate the meter. Once it is calibrated it should be accurate. I have never use it for urine but I use it for hydroponics, and it has served me very well
Question:	Is there a part number for a replacement probe
Answer:	No, there is no part number for a replacement probe.
Question:	It's not accurate after calibrating with ph buffer powder, why
Answer:	Please be advised that when you calibrated a calibration powder, you have to clean up the glass electrode with distilled water first, then calibrate the next calibration powder. Otherwise the reading will be off.

Product features

How to Calibrate the PH Meter?

1. Before calibration, prepare 3 beakers separately containing pH4.00 solution, pH6.86 solution, and pH9.18 solution. Make sure that each solution is 250ml and at a stable temperature of 25 degree.

2. Prepare 3 separate beakers with distilled water.

3. Press the ON/OFF button to turn on the meter.

4. Remove the cap and immerse the electrode

into the PH4.00 buffer solution. Stir gently and wait for the value to stabilize.

5. Press and hold the CAL button for 5

seconds. Hold the electrode in the solution until the LCD screen displays a value of pH 4.00.

6. Rinse the electrode with distilled water and blot dry. Repeat step 4, 5, and 6 for the pH 6.86 and pH 9.18 solutions.

1 High-Accuracy Resolution

Thanks to the premium integrated chip, sensitive electrode and low impedance glass film, you'll get accurate readings quickly with this PH tester, with a resolution of 0.01!

Powered by 2 AAA Batteries

With a high efficiency design, you can insert 2 AAA batteries and expect the PH meter to last several months, no problem. You can even save more energy by activating the 15-minute auto-off functionality.

Ergonomic Design

Thanks to the anti-slip design on both edges of the PH tester, you won't actually drop and break it. Whew!

Portable Carrying Case

Keep track of your meter while keeping it in great condition thanks to the portable carrying case that's included with your Dr.meter PH digital meter.

Product description

Kindly Reminder

1, Please recalibrate, if the ph / TDS tester was used / lay aside long time or replace battery.

2, Please don’t forget to wipe the ph / TDS tester with a clean and soft cloth when you have done before capping it again.

3, Be careful with the glass probe since it may be a little fragile when you use.

4, Please DO NOT use the soil meter to test any liquids directly such as pure water, lemon juice, vinegar and so on. This soil meter CAN ONLY be used in soil.

5, Please DO NOT insert the soil meter into very hard soil or touch hard objects, which is very easy to damage the probes.

6, Please DO NOT leave the probes of the soil meter inserted in soil longer than measurement time.

• Super value - 1 PH Meter(yellow) +1 TDS & EC Meter (blue)+1soil tester kit (green). Total is 3 PCS.
• Functions - The digital pH pen is equipped with auto temperature compensation function. TDS meter has lock & auto shut off function(Kindly remind : This meter can't test sea water.). Pushing the button, it can display the data about water purity level on the screen in PPM (parts per million). The soil meter can test soil pH to help you control the PH level in soil. (Note: this tester is designed for testing soil ONLY.)
• Accurate & reliable - these testers can test quickly and accurately within ±0.01 pH. It only takes a few seconds to show accurate and stable reading for the result to appear on screen.
• Easy to use - ph tester and TDS meter have sensitive electrode sensor ,simply press "ON". It only takes a few seconds for your result to appear the data on screen. Soil test kit just need to insert the probes into the soil about 4-6 inches, and wait for about 10 seconds to read the intuitive data. No battery required.
• Widely application - these meters are designed small and convenient. PH meter and TD&EC meter can test pH balance, ideal for testing drinking water, swimming pools, aquarium, spas, hydroponics, food and more. Soil tester is applicable to plants, garden, lawn and farm such as rice/vegetables/flowers etc.

User questions & answers

Question:	How do I know my plants need watering by soil tester
Answer:	The soil ph value on the meter dial ranges from 1 to 10 (1-3 dry, 4-7 normal, 8-10 wet). If your plant is very dry, the pointer of the soil meter will not swing or swing slightly. This means that your plants may need water. I recommend for anyone with finicky plants, pots without drainage holes, or anyone tired if getting soil under their fingernails!
Question:	What are the TDS meter test for
Answer:	It can used for test the tds value, EC, liquid temperature.
Question:	Without battery? Does that mean the soil tester kit has an internal battery
Answer:	This soil tester doesn't have or need a battery. Just adjust the switch. Very portable and convenient. I used it to my garden, is very accurate.
Question:	Can I use the ph meter to test salt swimming pool
Answer:	Yeah they work on a lot of things, just make sure to clean them after. The pH meter comes with 3 standards to make up and calibrate that meter.

Product description

Color:YELLOW

Digital PH Meter Water Tester

1.This pH meter sensitive and easy to use, just wait a few seconds and reading is stable.

2.Auto-off function and low-battery indicator.

3.The pH meter can easily be re-calibrated in the field.

4.pH meter with Large and easy-to-read Backlit LCD screen.

5.The pH tester for aquarium, pool, food & beverage, drinking water etc.

Specifications:

Measuring range: 0.00-14.00 pH

Resolution: 0.01 pH

Accuracy: 0.01 pH

Batteries: 2X 1.5V LR44 (included)

Automatic temperature compensation: 0-50℃(32-122℉)

Product Features:

►Easy to Use, you just remove the protective cap and immerse the pH meter electrode in

the solution and turn on the PH by "ON / OFF" switch to be measured.

Beats the heck out of trying to see the colors of a litmus strip.

►Easy to Calibrate, you can simply follow the instruction on the provided packet of

solution 4.01 or 6.86, immerse the pH tester in the solution until numbers get stable.

►Pocket Size, it's only 1.8 oz with size of 5.9x1.3x0.6 inch so that you can put it in

your pocket wherever you go outside for a PH testing, it also comes with a handy

storage case and 3 packets ph buffer powder for calibrating.

►Warning Tips,be careful with the glass probe since it may be a little fragile when you

use. Remember to gently wipe it with a clean, soft cloth when you're done before

capping it again.

Package Includes:

1 x pH Meter

1 x Carrying case

1 x User's manual

3 x pH buffer powders

• [Widely used]: Very suitable for home or laboratory use. It is suitable for testing the pH balance of drinking water, swimming pools, aquariums, reverse osmosis systems, hot springs or hydroponics. It is suitable for a wide range of applications.
• [LCD backlit display]: PH tester bright backlit LCD display, easy to use no matter in the day and night environment, and accurate measurement and clear display results.
• [Automatic temperature compensation]: The ph meter has built-in (ATC) automatic temperature compensation function, so it no longer needs to take care of the temperature of the test liquid, so it can accurately measure the pH value of the sample at any temperature in the range of 0 ° C-80 ° C (32 ° F-176 ° F).
• [High accuracy]: PH tester has a sensitive electrode sensor ,simply press "ON", It only takes a few seconds for your result to appear on screen,read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading.
• [Auto Calibration]: The SUNZEAL PH meter has an automatic temperature compensation function, which can be adjusted according to the water temperature and water quality, and the pH reading can be obtained almost immediately. Similarly, you can also use "Calibration Buffer Powder" to calibrate the tester with one button.

User questions & answers

Question:	Would this be a good tool for an aquarium
Answer:	Yes, it can detect the PH of swimming pool and aquarium water quality.
Question:	How often do I need to calibrate the pH meter
Answer:	Hello, if the PH meter has not been used for more than half a year, or you suspect that there is an error in the measurement, you can use the calibration powder we provide for calibration, thank you!
Question:	What do you use to clean electrode
Answer:	After using the PH meter, scrub with pure distilled water for a few times, then wipe it off with a clean paper towel, and store it in a cool place.
Question:	Would this be a good tool for an aquarium
Answer:	Yes, it is the best aquarium water quality measurement tool.

Product description

The pH Checker series supplies users with fast and accurate readings from 0 to 14 pH with a resolution of 0.1 pH. This compact tester features an easy to read LCD and simple to perform two point calibration. The ph electrode of the checker can be easily replaced. You only need to unscrew the electrode from the meter body and screw on a new one. The Checker is fast, accurate, lightweight and with 3000 hours of battery life, you don't have to worry about frequent battery replacement. 0.00 to 14.00 pH range. 0.1 pH resolution. +/-0.2 pH accuracy. Calibration: manual, 2 points. Electrode: HI 1270 (included). Battery Type / Life: 1.5V / approximately 3000 hours of continuous use. Environment: 0 to 50 degree C (32 to 122 degree F); RH max 95 percent. HI 1270 small diameter probe fits easily into a test tube. Measures 2-19/32" length by 2" width by 1" height. Weight: 1.8 oz without probe.

• Compact pH tester with narrow probe for use in small samples or test tubes
• Manual two-point calibration through trimmers for custom calibration
• Single-line LCD display screen for ease of viewing
• Replaceable electrode with screw connector to extend meter life
• Low power demand for extended battery life

User questions & answers

Question:	is it supposed to come with oil at its end? The one I received had oil at the end of the checker
Answer:	It comes with a cap on the end to keep the probe moist. You'll need to calibrate it when you receive the probe to ensure accuracy.
Question:	Can it be used to test semi solid (like a peanut butter texture) food item and a liquid food item
Answer:	Yes. We have been using it to test our yogurt and it is fine.
Question:	I will be using this with my aquariums so figure anywhere from 7 - 8.4 for ph. i am confused as to which calibration solution i need
Answer:	I am looking at the Hanna website and I am seeing that they offer a calibration solution specifically designed for this instrument in pouches and that they recommend that you use pH 4, 7 and 10 for calibration. Typically when you work with these types of instruments, you want to establish a range of known data points(in this case, pH) for the instrument to use as a comparison. Let the customer know that they do not need a buffer with a specific pH, but rather a series of solutions that will allow the instrument to compare a known pH with the material being tested(the aquarium water). What I would recommend is our pH Meter Calibration and Maintenance set. The Item number is 185740. Let me know if I provide additional assistance.
Question:	Is the item durable? - Is this item easy to use? - What are the dimensions of this item
Answer:	The item is durable. It is easy to use It is essentially a pencil sized probe total size about 6 inches in length. It will require cleaning with distilled water to use so as not to contaminate the sample from previous ones. It appears quite accurate maybe too accurate as it will vary easily in output

• ✔[ EASY READING BIG BACKLIT LCD DISPLAY & QUALIFIED WATER TESTER ] Hofun water quality meter with Big Backlit LCD is far superior than other ones, which allows wider angles of data reading and night reading.
• ✔[ RELIABLE WATER TESTER -- ACCURATE & QUICK ] : Equipped with premium quality &sensitive probe, Hofun water quality tester enables quick and convenient test. Put the probe into water and LCD shows accurate results in seconds.
• ✔[ AUTOMATIC TEMPERATURE COMPENSATION ]: No more need to worry about the temperature of to-be tested liquid, as PH meter & TDS meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH & TDS value of the sample at any temperature in a range of 32°F - 140°F (0°C - 60°C).
• ✔[ EASY CALIBRATION ]: The Hofun PH pen is featured with auto temperature compensation which can be adjusted to water temperatures and water quality to give PH readings almost instantly. As well, the tester can be tested with using Buffer Powder.
• ✔[ WIDE USAGE ]: Pocket Size PH meter & TDS meter is the ideal water tester for water, pools, aquariums, spas, hydroponics, food, wine and beer making and more.

User questions & answers

Question:	How to test the ph level of my tap water with this ph meter
Answer:	The digital ph meter is very simple to use. You just turn it on and put the probes into water and then you get the ph level of your water.
Question:	What are the steps for calibration? I want to know how many steps are involved before I purchase one
Answer:	There are three different range of solution powder, you can calibrate the meter by dipping three bottles of solution with different PH value. And after each calibration, do no forget to clean the sensor of meter with distilled water.
Question:	How accurate is the ph meter
Answer:	Test range of this digital ph meter is 0-14 pH. Resolution is 0.01 pH and accuracy is ±0.01 pH.
Question:	Is there amy way to calibrate it after long term of usage
Answer:	Yes, the ph meter comes with 3 pack of calibration powder. You may calibrate the ph tester with the help of User Manual.

Product features

Hofun Professional PH meter& TDS meter

Equipped with premium quality &sensitive probe, Hofun water quality tester enables quick and convenient test. Put the probe into water and LCD shows accurate results in seconds.

EASY READING BIG BACKLIT LCD DISPLAY & QUALIFIED WATER TESTER

Hofun water quality meter with Big Backlit LCD is far superior than other ones, which allows wider angles of data reading and night reading.

EASY CALIBRATION

The Hofun PH pen is featured with auto temperature compensation which can be adjusted to water temperatures and water quality to give PH readings almost instantly. As well, the tester can be tested with using Buffer Powder.

Ideal Water PH Tester for Household Drinking, Pool and Aquarium

Package Includes:

► 1 x PH Meter+ 1 x TDS Meter

► 3 x Calibration packets

► 1 x Carrying case

► 1 x User's manual

Note:

► Clean the electrode with distilled water every time before and after use

► Be careful with the glass probe since it may be a little fragile when you use.

► Remember to gently wipe it with a clean, soft cloth when you're done before capping it again.

► Open the battery case or replace battery, then need to re-calibrate the meter

Product description

The ultimate handy solution for measuring pH! Plants get their nutrition from minerals but they can only get all the right minerals they need if certain conditions are right. A key factor that affects food uptake is whether your solution is acid or alkaline. We measure this in pH. The Bluelab pH Pen is the latest innovation for hand held meters. It provides a compact quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Teamed with our Bluelab EC Pen or Bluelab ppm Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health. Now, isn't that handy? Features - Measures pH and temperature - Selectable units for ˚C & ˚F - Backlit LCD display - Double junction probe (not replaceable) - Successful pH calibration indicator - Hold reading function - Low battery indicator - Fully waterproof - Auto off function - Automatic temperature compensation.

• Measures pH in solution for acid or alkaline conditions to make precise up and down adjustments with lab quality glass probe used for the pool, drinking water, hydroponics, brewing, and growing
• EASY two point calibration and auto temperature compensation makes this digital meter a handy tool with backlit LCD display and calibration reminders
• Double junction probe improves accuracy, reliability, and probe lifespan compared to regular probes, more accurate than comparable pens, test strips and other testing methods
• Other features: auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
• Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1 Year Limited Warranty with proof of purchase

User questions & answers

Question:	Is there a pad in the cap that absorbs elcteode storage solution
Answer:	Yes there is a small piece of sponge material in the cap that you can apply storage solution whenever you plan to leave the cap on. I recommend that if you will be using your pen daily, you get a small glass cup ( the 100ml measuring cups work ideal) and keep storage solution in this cup and keep pen placed in this as opposed to removing and replacing cap continuously. I generally mix 20ml of storage solution with 30ml of distilled water to keep in cup for pen.
Question:	Does this pen really have to be calibrated
Answer:	These are great pens for the hobbyist just remember when you do not see the check mark on your pH pen or on your PPM EC conductivity bluelab pen it is time to calibrate if you do not see this check mark displayed on either pin on the screen calibrate. I also recommend using the 7.0 bluelab calibration solution followed up by the 4.0 bluelab calibration solution to get a more accurate reading of the pH solution. Also use blue lab calibration solution for your conductivity meter as well these meters will last a very long time I had mine for almost 4 years and still in good shape keep your meters clean keep your pH bulb moist in store in the pH storage solution that is made by blue lab. Never let the bulb go dry if you do it will take 24 hours or it is good to give 24 hours to rehydrate your pH bulb. And if I'm not mistaken on the bottles the calibration solution of either your conductivity meter solution for calibration or your pH pen calibration solution it says on the bottle after opening don't use after three months I don't know if this matters a whole lot or not but I've used my solution over three months plenty of time and no noticeable difference in this. I guess the main thing is to keep your pH pen glass bulb hydrated I believe that this is probably the most important thing when owning a blue lab pH testing pin. If there is anyone to add to this conversation or to give me any advice that's positive please do so I am always willing to learn and listen so please if anyone has any experience with these pins other than me and something that I may not have mentioned or know please tell me or leave a review thank you I hope this has been helpful. And please stay positive with positive feedback just remember people there are no stupid questions and no mistakes only lessons thank you.
Question:	are batteries included
Answer:	Yes, it uses a single AAA battery, which is included.
Question:	How often do users have to calibrate this meter and how accurate is it
Answer:	This meter is set up to tell you its time to recalibrate. In the bottom right corner there will be a pH symbol with a check mark beside it. about every 5-6 weeks (I think) The check mark will disappear (this may vary with usage) that means its time to recalibrate. You have to look for it but you get used to it. If you are late noticing this, it wont hurt as long as you don't wait for months on months without calibrating. This pen holds its calibration well. But it does best when you keep it in the storage solution that is made for it by Bluelab. I prefer this pen over all others of similar price. I have found it to be very dependable.

Product features

Get the fundamentals of growing right, every time

pH plays a pivotal role in making the nutrients in your solution soluble so that they can be accessed by your plants. To help your plants thrive, get the fundamentals right by measuring pH and temperature to ensure that these are always within the optimal range.

New Zealand-made quality, built for growers

Our products are designed and built with growers, for growers - so you can relax knowing that your pen can withstand the knocks, drops and deep-water plunges that come with everyday growing. The Bluelab pH Pen has been designed and built in New Zealand.

Easy calibration

Get rid of the headache of calibration with our simple two-point calibration process. Remember to calibrate before first use. Each pen comes with a 30-day calibration indicator that can be easily viewed on a backlit LCD display.

Fast and accurate readings

A double-junction probe comes standard with the Bluelab pH Pen. Unlike standard glass bulbs, the double-junction probe reduces build up on the probe for consistent readings and to increase lifespan.

Superior design and manufacturing

All Bluelab products are proudly designed and manufactured in New Zealand. The design focuses on ergonomic qualities to assist with regular use in varying grow environments. Our rigorous production process includes each pen being inspected by hand before it finds its way to you!

The Bluelab promise

All Bluelab's handheld pens come with industry-leading support. This means that you can have complete peace of mind when you invest in the Bluelab pH Pen.

Bluelab: Trusted by growers like you for over 30 years

For over 30 years, Bluelab has been providing award-winning and innovative technology that helps growers unlock their plants' full potential. At Bluelab, we believe that our commitment to designing hardy, purpose-built products and creating strong educational programs will help elevate the standard of growing. Together with our growers, we will create a world with fewer pesticides, food miles and less water usage. Let Bluelab’s products take your growing to the next level.

Product description

Digital PH Meter Water Tester This pH meter is affordable and useful for those who need a PH tester for household and laboratory use. It's not only ideal for household or laboratory use.Also suitable for testing pH balance of drinking water, pool, aquarium, food Project, Hot tub test strips,RO system, Spa, or hydroponics.



Specifications of Tds Meter

✔ Measuring range: 0.00-14.00 pH

✔ Resolution: 0.01 pH

✔ Accuracy: 0.01 pH

✔ Batteries: 2X 1.5V LR44 (included)

✔ Automatic temperature compensation: 0-50℃(32-122℉)

✔ Dimensions: 15x2.5x1.3cm/6x1.1x0.5 inch

✔ Net Weight: 52g/1.83 oz



Features of ph tester

💦High Quality and Durable It's highly accurate for measuring range of 0-14 PH, 0.1 PH resolution, measure & display pH result simultaneously with LCD diplay, reliable and quick reading.

💦Easy to Use You just remove the protective cap and immerse the PH meter electrode in the solution and turn on the PH by "ON / OFF" switch to be measured. Beats the heck out of trying to see the colors of a litmus strip.

💦Easy to Calibrate You can simply follow the instruction on the provided packet of solution 4.01 or 6.86, immerse the ph pen in the solution until numbers get stable.



💡Attention of pH meter digital water tester💡



1.Don't touch the electrode by hard tools or fingers.



2.Clean the electrode every time before and after using.



3. Always replace protective cap after using digital meter to keep electrode from drying out due to prolonged exposure to air ,which leads to slow or unstable readings



4. if electrode has been dried out immerse it into distilled water for a



5. When the display value is fuzzy or unshown,The Battery should be replaced promptly.Pay attention to the polarity of battery, then need to recalibrate the water meter

• ✔HIGH ACCURACY: PH tester has a sensitive electrode sensor ,simply press "ON", It only takes a few seconds for your result to appear on screen.read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading.
• ✔WIDELY USE: Ideal for household or laboratory use; Suitable for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics; Appropriate for wide range of applications
• ✔ AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F)
• ✔Make You Satisfied With The Products: Come with 1x PH meter, 1x user manual, 3x 1.5V LR44 button cells(build-in), 3x PH Buffer Powders.
• ✔Lightweight And Easy To Use: Just remove the protective cap and immerse the PH meter electrode in the solution and press the button to be measured. Beats the heck out of trying to see the colors of a litmus strip.

Product description

PH METER

Measurement range: 0.00- 14.00 pH

Accuracy: ±0.01 pH

Resolution: 0.01 pH

Power Supply: 2*1.5V (LR44 Button cells) (Included)

Operating Temperature: 0°F - 140°F

Size: 6.10”×1.22”×0.70”

Net Weight:1.76oz

Functions:

Automatic Temperature Compensation (ATC)

One button (CAL) calibration

Automatic shut off after 5 minutes inactive

Calibration Step:

a. Turn on PH meter and clean the electrode in distilled water.

b. Dissolve PH buffer powder in 250ml of distilled water, and immersing the electrode in the pH 6.86 standard solution.

c. Pressing ”CAL” button until the reading flashing, wait the reading equal to the standard buffer solution

d. Repeat the above steps with pH 4.01 calibration solution ( For testing acidic liquid) or with pH 9.18 calibration solution ( For testing alkaline liquid)

e. Clean electrode with distilled water and dry it.

- Note 1: Since the H+ is Not uniform distribution in liquid ( The pH is difference in liquid's diffrent depth), please kindly slightly shake the testing sample before testing.

- Note 2: Since the function of that automatic distinguish the calibration solution is only for pH 6.86, pH4.01 and pH 9.18, please kindly make the pH buffer powder in 250ml distilled water strictly.

TDS METER

Measurement range: 0 - 9 999ppm (＞999ppm Display×10)

Accuracy: ±2%

Power Supply: 2*1.5V ( LR44 Button cells) (Included)

Operating Temperature: 32 - 122 °F

Size: 5.57”×0.98”×0.55”

Net Weight: 1.94oz

Functions:

Automatic Temperature Compensation (ATC)

One button (HOLD) lock the reading

Automatic shut off after 10minutes inactive

- Note 1: TDS meter had been calibrated in producing

- Note 2: The TDS meter doesn’t suit for testing sea water.

PACKAGE INCLUDES:

1×PH meter

1×TDS meter

3× PH buffer powders

2×User manual

• Digital PH Meter: 0.00-14.00 pH measurement range, ±0.01 pH accuracy, reliable and quick readings.
• Digital TDS Meter: 0-9990 ppm Measurement Range, ±2% accuracy, quick readings and has the function of HOLD readings.
• Automatic Temperature Compensation ( ATC ): PH tester and TDS tester both have the ATC function, they can read the actual pH or ppm value though the sample is at different temperatures.
• Auto-Off Function: PH and TDS pen tester both have the function of auto-off. They will automatically shut off being inactivity, to save the batteries’ energy if we forget to close the meter after using.
• Easy to Use and Pocket Size. Just need to press “ON/OFF” button for using the PH meter or ppm meter. Press “CAL” button for PH meter’s calibrating, Press “HOLD” button for holding the TDS tester’s reading. And digital PH tester and digital ppm tester all are lightweight and small size, easily pocket them.

• High Accuracy Meter ☛ TDS meter is quick reading within 5 seconds; measurement range 0-9990ppm, 0-9990µs/cm; accuracy ± 2%, 0.1- 80.0°C, 32.0-176.0°F; The PH meter is readyout accuracy, measure range: 0~14PH, Accuracy: ±0.01 PH.
• 4 In 1 Tester Kit ☛ Buy 1 kit can test 4 water quality values. TDS tester can measure TDS, EC and liquid temp in fahrenheit or celsius.The PH meter can tell you the acid-basic value within 0.01 high accuracy.
• Convenient Use ☛ Open the tester pen cap, press the ON/OFF button, immerse the tester into the tested liquid (the solution should not over the immersion line)and wait for a few seconds to get reading.
• Widely Application ☛ Water tester is designed to improve the water quality. Portable digital tester can be used for drinking water,lab,aquarium,swimming pools and distilled water.
• Service & Warranty ☛ The package comes with pH meter and ppm meter. We offer product return and refund service for the quality problem product. Welcome to contact us by e-mail!

User questions & answers

Question:	Does this tds an ph meter need to be charged
Answer:	No, it needn't. The meter is equipped with battery.
Question:	Do these water tester kits need to be cleaned with solution
Answer:	I always clean it with distilled water.
Question:	How to calibrate the PH meter
Answer:	It comes with solution powder solution that you add to a premeasured amount of distilled water. You dip the pH meter in the buffered solution and it auto calibrates.
Question:	How long to wait for accuracy reading
Answer:	Only need to wait for a few seconds.