10 best hm digital digital pen

Product description

The PH-80 is an economically priced, reliable pH meter (aka pH pen or pH tester) that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water, boilers and cooling towers, wastewater and more. The PH-80 measures pH and Temperature. Features include one-touch automatic digital calibration,water resistant body, simultaneous temperature display, sleek, lightweight design, a large LCD display, Automatic Temperature Compensation (ATC), Auto-off function, data-hold function and low-battery indicator. Each meter includes storage solution and a single use pH 7.0 buffer pack. The PH-80 is factory calibrated for your convenience and can easily and quickly be recalibrated with digital calibration to pH 4.0, 7.0 or 10.0 using the meter's simple one-touch process. Includes a cap, batteries, storage solution and pH 7.0 buffer.

From the Manufacturer

NEW The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. FEATURES ?Measures pH and Temperature ?One-touch automatic digital calibration ?Water resistant ?Simultaneous temperature display ?Sleek, lightweight design ?Large LCD display ?Automatic Temperature Compensation (ATC) ?Auto-off function, data-hold function and low-battery indicator ?Includes storage solution in a sponge embedded in a translucent cap ?Factory Calibrated: The PH-80 meter is factory calibration to pH 7.0. The meter can easily and quickly be recalibrated with digital calibration to pH 4.0, 7.0 or 10.0 using the meter's simple one-touch process. ?Includes a cap, batteries, storage solution and pH 7.0 buffer.

• Hold button and auto shut-off
• Automatic Calibration: Auto-ranging to 4, 7 or 10 pH
• Very reliable and long lasting
• Measures pH and Temperature
• One-touch automatic digital calibration
• Water resistant
• Simultaneous temperature display
• Sleek, lightweight design

User questions & answers

Question:	Is it normal for crystals to be on one of the electodes brand new out of the package? Should I try and clean it
Answer:	Hello, this is powered by 300 watts, U.S standard 120 electric voltage.
Question:	will it test my orine? CAUSE i want to test the PH of mine
Answer:	The power button needs to be held down. It is a variable speed button, so as you press harder and the button goes deeper, the blender becomes more potent. Important: In order to work you have to first press the safety button (with your palm on the back of the blender), and the variable speed button (with your index finger).
Question:	what is the range of the ph that this device goes too
Answer:	The box it comes in is filled with molded foam around each item. It’s probably a better option than any storage container/case. And free
Question:	how much storage solution and calibration solution comes with this? is it something that I could do without initially to get by or plan to buy with it
Answer:	Yes, all the items in picture one come in a KitchenAid box with molded foam. The last bullet in the “about this item” lists everything in the picture/comes in the box

Product description

Applications For Hydroponics and Gardening, Pools and Spas, Aquariums and Reef Tanks, Water Ionizers, Drinking Water And More.FEATURES

Measures PH and Temperature

One-Touch Automatic Digital Calibration

Water Resistant

Simultaneous Perature Display

Sleek Lightweight Design

Large LCD Display

Automatic Temperature Compensation(ATC)

Auto-Off Function,Data-Hold Function and Low-Battery Indicator

Factory Calibration To PH 7.0. The Meter Can Be Recalibrated With Digital Calibration To PH 4.0, 7.0 or 10.0 Using The Meter's One-Touch Process.

Includes a Cap, Storage Solution and PH 7.0 Buffer

Specifications:

pH Range: 0 - 14

Temperature Range: 1-80 °C; 33-176 °F

Resolution: 0.1 pH; Temperature resolution is 0.1 °C / °F

Accuracy: +/- 0.2 pH; Temperature accuracy is +/-2%

Calibration: Digital Automatic Calibration

Electrode:Glass Sensor and Reference Tube Electrodes

Housing: Water Resistant

Power Source: 3 x 1.5V Button Cell Include Batteries (Model 357A)

Dimensions:15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 Inches)

Weight: 53.9 g (1.9 oz)

• Measures PH and Temperature Water Resistant
• One-Touch Automatic Digital Calibration
• Automatic Temperature Compensation (ATC)
• Auto-Off Function Data-Hold
• For Testing Applications Such As Hydroponics & Gardening, Pools & Spas, Aquariums & Reef Tanks, Water Ionizers, Drinking Water And More

User questions & answers

Question:	How do you clean the pH tester? I saw a video that said to rinse it in di water and dry with an a "kimtech" wipe? Other said an air duster
Answer:	Yes it does. I have an HP printer myself and it works perfectly well both in Windows and in Linux. I have mine connected wirelessly over Wi-Fi.

Product description

Product Description: What do your fish swim in? A TDS meter (aka ppm pen, nutrient tester, salt tester) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. The TDS-4TMA uses the NaCl conversion factor, so it can also be used for testing salt levels. With the push of a button, the TDS-4TMA can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). 100 ppm = 0.01%. The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-4TMA is great for checking your freshwater aquarium, koi pond or water filtration/purification system, such as reverse osmosis (RO) or deionization (DI). (The meter does not test for biological contaminants.)

• TDS meter for checking TDS/salt (NaCl) levels freshwater aquariums, ponds and water purification systems.
• The smallest and lightest TDS meter available on the market.
• Hold Function: Freeze the measurement to view it out of the water.
• Auto-off function - Turns off meter after 10 minutes of non-use to conserve batteries.
• ATC (Automatic Temperature Compensation)

User questions & answers

Question:	Can it be caliberated
Answer:	Every key is backlit. To conserve power, the back lighting is not very strong but in darker situations, you can see the keys fairly easy.

Product description

Product Description: HM Digital's PH-200 is a digital waterproof pH meter (aka pH tester or pH pen) that is ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more. It is fast-acting, features amazing results and perfect for the hobbyist to the laboratory professional.

• plastic
• Imported
• Measures pH and Temperature, Range: 0-14 pH, 0-80 °C, 32-176 °F
• Autoranging three point calibration with digital fine tuning
• Waterproof housing (IP-67 rating)
• Includes storage solution in a sponge embedded in a clear cap
• Auto-off function, data-hold function and low-battery indicator

User questions & answers

Question:	Is this meter appropriate fow wine
Answer:	I've been using it for beer pH measurement so wine should be fine.
Question:	What is the operational temperature range
Answer:	I use it for adjusting brewing water, so the range I've use it is from 45F to 165F.
Question:	is this meter pre calibrated out of the box
Answer:	Yes.....any bottled water that has been treated with the Reverse Osmosis (RO) has a PH of 7 .......Read the Label for (RO).....so it's an easy and cheap check.......
Question:	Which storage solution is best to use for this product? Also how often do you have to change storage fluid
Answer:	There is hm ph electrode storage solution you can get...there is a sponge in the cap of this ph meter that you dont want to let dry out.

Product description

Product Description: How Pure is Your Water? A TDS meter (aka ppm pen, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the AP-1 can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The AP-1 is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The AP-1 is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), colloidal silver, aquariums, RO/DI systems, pools and spas, and more. HM Digital's AquaPro digital water tester has a sleek design that's perfect for today's modern kitchen. The AquaPro digital water testers are the next generation for today's tech-savvy and health-conscience consumer. Temperature Range: 0-80 C; 32-176 F

• Measures total dissolved solids (TDS) and temperature
• Automatic Temperature Compensation (ATC)
• Water-resistant housing
• Digital Calibration (push button)
• Magnetic body - store the meter on your fridge when not in use!

User questions & answers

Question:	Does this work for measuring percent of salt in food brine
Answer:	Yes
Question:	can you use this to check colliodal silver ppm
Answer:	48
Question:	which conversion factor does this meter use to convert EC to ppm 500 or
Answer:	No it’s not a touch screen
Question:	Does anyone have instructions for this tester? I have had mine for two years and can’t find the instructions
Answer:	Yes. 1 year.

Product description

Product description: HM Digital's COM-100 is a waterproof combination EC/TDS/Temperature meter that is ideal for all water quality testing, water purification applications, drinking water, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. The COM-100 is a professional level EC/TDS meter at an unbeatable price.

• plastic
• Imported
• Measures electrical conductivity (EC), total dissolved solids (TDS), and temperature
• Four scales: µS, mS, ppm, ppt (mS and ppt are new)
• Three different nonlinear ECtoTDS conversion factors (KCl, 442TM, NaCl).
• Waterproof housing (IP67 rating)
• Measurement Range: 09990 µS; 08560 ppm; 09.99 mS; 08.56 ppt

User questions & answers

Question:	Isn't one supposed to use calibrating and cleaning solution with this
Answer:	The display is matte
Question:	Any trouble measuring in mS
Answer:	It's non-touch version. 1800P is touch version, 1080p is non-touch.
Question:	My meter want read over 999 or am I looking at the wrong ppm
Answer:	Pretty much anything that plays nice with Windows plays nice with Linux at this point, Dell especially. I think all Dell's drivers are built into the Linux Kernel at this point, or at least most of the devices work fantastically with Linux's generic drivers.
Question:	Can this unit be used to test PH
Answer:	No. You can always add one.

Product description

HM Digital PH-80 pH HydroTester, PH80 Tester Meter, includes one pH 7 powder packet (makes 100 ml of solution when mixed with distilled water) and a small pack of storage solution. Authorized HM Digital Distributor - eSeasongear Brand new meter with One-Year Warranty (check out the matching COM-80 TDS meter please).

• Measures pH and Temperature
• One-touch automatic digital calibration
• Water resistant
• Simultaneous temperature display

User questions & answers

Question:	Does this unit come calibrated
Answer:	They sell them right here on Amazon. Try using a few different key words in the description.
Question:	Calibrate solution how do I get calibration solution for this unit
Answer:	I do not have any 0.030 tips. But the indicator has a standard thread so you should be able to get any size top you need. This one comes with an 0.080 installed.
Question:	Would this work for testing PH of pool water
Answer:	Yes a nice red plastic case with a foam in it protects the instrument very well '
Question:	How do you calibrate and how often
Answer:	The diameter of the ball is .078"

Product description

Product Description: A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-EZ can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-EZ is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The TDS-EZ is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, and more.

From the Manufacturer

Water Quality Tester with Auto-off Function.

• plastic /100%
• Imported
• Economy model that is ideal for end-users. Highly efficient and accurate due to its advanced microprocessor technology.
• Hold Function: saves measurements for convenient reading and recording and battery life is approx. 1000 hours of usage and power source is 2 x 1.5V button cell batteries (included) (LR44 or equivalent)
• Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Display: large and easy-to-read LCD screen.
• Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Fun, translucent blue housing that's very strong and durable.
• TDS-EZ meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Includes a TDS chart sticker on the back of the meter that explains TDS values.

User questions & answers

Question:	can the battery be replaced? if so, what battery does it take
Answer:	Yes, the batteries can be replaced. It takes 2 LR44G "button cell" batteries like the batteries that go in watches, ect. The unit has an auto shut-off so the batteries should last a good long time.
Question:	Can this be used to check for collodial silver in the 10 ppm range in a solution of distilled water
Answer:	No it can't. It doesn't detect specific elements or chemicals. Though the way calcium, lead, and collodial silver may dissolve would effect the numerical value of TDS and if you knew that in 100 ml of 45 deg Celsius water would only hold X# ppm of an element you might be able to figure it out based on the numerical value shown.
Question:	What temperature was this device calibrated at? I noticed that readings vary with temperature. How do I get a consistent reading
Answer:	FROM HM DIGITAL: The TDS-EZ was calibrated at 25 degrees Celsius (77F), but more importantly, the TDS-EZ is one of HM Digital's most basic meters and does not have Automatic Temperature Compensation (ATC). Therefore, since it does not have ATC, you will see discrepancies when testing hotter or colder from the baseline of 25C/77F.If your water is typically around this temperature, it won't be much of a difference, but if +/-10 degrees or more from 25C/77F, it's a good idea to get a meter with ATC, such as HM Digital's TDS-3, TDS-4, AP-1, COM-80 or COM-100.
Question:	How many times can the tester be used
Answer:	FROM HM DIGITAL: Unlimited. Eventually, you will need new batteries, but the TDS-EZ can be used an unlimited number of times.

Product features

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range

Product Description:

A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-EZ can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million).

The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-EZ is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The TDS-EZ is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, and more.

Product description

Product Description: A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-3 can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-3 is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The TDS-3 is a great tool for drinking water, water filtration and purification, colloidal silver, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, commercial and industrial applications and more. The TDS-3 is a rugged model that includes a protective carrying case. This is the world's most popular handheld TDS meter for industry professionals.

From the Manufacturer

Ideal for commercial use.

• plastic
• Imported
• Its Ideal for Commercial Use
• Its Includes a Carrying Case with Belt Clip
• Hold Function: Saves Measurements for Convenient Reading and Recording
• Highly Efficient and Accurate Due to Its Advanced Microprocessor Technology
• Built-in Digital Thermometer, Display: Large and Easy-to-read LCD Screen.

User questions & answers

Question:	The one I bought seems to work however it has no way to adjust it there is a hole in the back but no screw is it a imposter
Answer:	There isn't a cd drive built-in.
Question:	Does this teat for lead , mercury, cadmium and other metals? If so, does it tell you concentrations
Answer:	I would think so
Question:	Where is this item made
Answer:	No there's not
Question:	Does this TDS compensate for differences in temperature like the HM Digital TDS
Answer:	1 year manufacture warranty.

Product description

Product Description: How Pure is Your Water? A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-4 can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-4 is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The TDS-4 is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), colloidal silver, aquariums, RO/DI systems, pools and spas, and more.

From the Manufacturer

TDS Tester with Advanced Microprocessor Technology.

• Plastic
• Imported
• This TDS tester is ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver
• ATC (Automatic Temperature Compensation) ; Advanced microprocessor technology
• The Sleek design of the TDS-4 is perfect for personal or commercial use
• Alkaline batteries included
• Hold Function: Freeze the measurement to view it out of the water.
• Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries

User questions & answers

Question:	Does this TDS compensate for differences in temperature
Answer:	Mine didn’t either . I contacted the seller.
Question:	My water tested at 244ppm before I got my water softener. Tests at 238ppm now. Softener is working, but why so little change
Answer:	Should
Question:	The picture is a hat, am I getting a hat
Answer:	It comes with a usb cable to charge it. It plugs into the top of the pen.
Question:	What is the difference between this product and the TDS-EZ Water Quality TDS Tester? What made you buy this one instead of the other? Is it just the readout accuracy difference (+/- 3% vs. +/- 2%) and "pocket size"? Someone mentioned this has temperature compensation circuitry that does not exist in the HM TDS-EZ. Is t
Answer:	Internal