13 best digital geiger counters

Product description

The GCA-07W is a handheld personal nuclear radiation detector. A proven track record for detecting nuclear radiation in school physics lab, industrial settings, transport containers, top soil, granite table tops, scrap metal, oil fields, objects and interior spaces.



The external wand makes it easier to search materials and surfaces for radioactivity. The GCA-07W detects Alpha, Beta, X-ray and Gamma radiation above 3 MeV, 50 KeV, and 7 KeV respectively.



Easy to read LCD is a 2 line by 16 characters that provides a current count and radiation level readout. Simple front panel instrument controls make the GCA-07W easy to use. Toggle switches control all the front panel options. User can select a time period, type of measurements (Imperial or Metric). Measurements (counts per second) are converted into radiation levels (mR/hr or mSv/hr). Time selection switch allows Counts Per Second (CPS) or Counts Per Minute (CPM) mode.



Factory calibrated using a NIST traceable source to ensure accurate measurements. Our NRC certification is available at additional cost from the manufacturer. The NRC certification certifies your Geiger counter has passed ANSI-STD N323A calibration using a NIST traceable source from an independent US licensed laboratory conforming to United States Nuclear Regulatory Commission NRC regulations 10-CFR-34 and 10-CFR-35 standards (available at additional costs through the manufacturer).



Options: Jack for Headphones or External Speaker. External Power Supply included. 3.5mm Data Port for WIN PC and microcontroller interface. The WIN PC program requires optional 3.5mm to USB data cable.





Secondary indicators; audio (clicks) and visual (LED) included. 9V battery (mobile operation) not included.

User questions & answers

Question:	Does this unit beep or click? I have seen mixed info. Could someone upload a video of it
Answer:	That's an interesting question. The audio output is a tone generator. But that audio output is pulsed quickly so the tone sounds more like a click than a beep. Technically, they're both right.
Question:	Does it have an end sensitive wand
Answer:	I'm not sure what you mean here. The wand has an open end that exposes the mica window of the GM tube for the detection of alpha particles. In the photograph the wand has a plastic end cap on it that I recommend you keep on unless you are specifically trying to detect alpha particles. The mica window of the GM tube is thin and easily damaged.
Question:	Will this measure radon in your house
Answer:	The GCA-07W is sensitive to alpha radiation given off by radon. However this is not the instrument to use to detect or measure Radon in the home. There are specialty instruments and equipment available for just this purpose.
Question:	Can this measure radiation in ocean fish
Answer:	This is a complex question. The GCA-07W can detect alpha, beta, x-ray and gamma radiation. Checking fish or food for radioactive contamination is a little difficult and Geiger counters, (from us or any other manufacturer) is not the ideal instrument to do so, here's why. The GCA-07W Geiger counter can detect alpha radiation. However if the fish (or food) being tested has a alpha radiation emitter internally, the food itself will block the alpha radiation and stop it from being detected. If the alpha radiation contamination is on the surface of the fish (unlikely), it can be detected. Similarly, if the fish has a beta radiation contamination internally, let's say a SR-90 contamination, the water in the flesh of the fish will effectively block the beta radiation from being detected. Again if the beta contamination is on the surface of the fish (unlikely), it can be detected. With gamma radiation the situation changes. Gamma radiation can penetrate the flesh of the fish to be detected. The problem arises is that low level contamination gamma radiation from let's say a CS-137 contamination will be indistinguishable from normal background radiation. So to test for this contamination , one method a laboratory may perform is a gamma spectroscopy (scintillation detector) to determine the source of the radiation. In the case of testing for alpha and beta radiation mentioned before, a lab might incinerate the food or fish in question down to ash. Without the water blocking radiation it becomes easier to test the material for beta and alpha contamination.On the Images website we have a number of nuclear experiments and articles. We have an article on testing food for radioactive contamination that goes into greater detail than I can here.I hope this information helps.

Product description

The GCA-06W is a handheld personal nuclear radiation detector. A proven track record for detecting nuclear radiation in school physics lab, industrial settings, transport containers, top soil, granite table tops, scrap metal, oil fields, objects and interior spaces. The external wand makes it easier to search materials and surfaces for radioactivity. The GCA-06W detects Alpha, Beta, X-ray and Gamma radiation above 3 MeV, 50 KeV, and 7 KeV respectively. Easy to read LCD is a 2 line by 16 characters that provides a current count and radiation level readout. Simple front panel instrument controls make the GCA-06W easy to use. Toggle switches control all the front panel options. User can select a time period, type of measurements (Imperial or Metric). Measurements (counts per second) are converted into radiation levels (mR/hr or mSv/hr). Time selection switch allows Counts Per Second (CPS) or Counts Per Minute (CPM) mode. Factory calibrated using an NIST traceable source to insure measurements. Our NRC certification is available at additional cost from the manufacturer. The NRC certification certifies your Geiger counter has passed ANSI-STD N323A calibration using a NIST traceable source from an independent US licensed laboratory conforming to United States Nuclear Regulatory Commission NRC regulations 10-CFR-34 and 10-CFR-35 standards (available at additional costs through the manufacturer). Options: Jack for Headphones or External Speaker. External Power Supply included. 3.5mm Data Port for WIN PC and microcontroller interface. The WIN PC program requires optional 3.5mm to USB data cable. Secondary indicators; audio (clicks) and visual (LED) included. 9V battery (mobile operation) not included.

• HANDHELD PERSONAL NUCLEAR RADIATION DETECTOR. Fast, Accurate and Easy To Use. Detects a broad spectrum nuclear radiation, including low energy background radiation. USA Support. Assembled in the USA.
• NRC CERTIFICATION READY - Our NRC certification is available at additional cost from the manufacturer. The NRC certification certifies your Geiger counter has passed ANSI-STD N323A calibration.
• AMERICAN MADE GM TUBE: Detector Sensitivity LND712: Detects Alpha particles above 3 MeV in energy. Beta radiation above 50 KeV; X-Ray and Gamma radiation above 7 KeV.
• COUNTING RESOLUTION AND RANGE: 1 Count Per Minute (CPM) - 10,000 Counts Per Second (CPS).
• RADIATION RESOLUTION AND RANGE: 0.001 mR/hr resolution / 1,000 mR/hr Range (Imperial measurements); 0.01 uSv/hr resolution - 10 mSv/hr range (Metric)

User questions & answers

Question:	I get all that stuff? Or just the unit with its little probe? Looks to complicated
Answer:	, sorry to say you got scammed this product has no value whatsoever
Question:	My understanding is that g/m tube units like this "saturate" at higher levels (nuclear war or accident) of radiation, and indicate very low. true
Answer:	It should have a cable with a transformer That goes to the electricity and the white triangular unit (I think left side) the array which should be connected to the white triangular unit ( I think right side). You put only the array in the water the triangular white unit should always be outside. the water should not cover the array. Once everything is set and you are ready to use you turn it on by pressing it stops automatically at 30 minutes
Question:	Does " nrc certification ready mean " that i still have to send the item to a us lab. and spend 120 $ extra ? or is it all set to use
Answer:	Any array with a standard 1/4 inch jack will work fine. We suggest for the best detox to use Super Duty Arrays. You can find this unit with Super Duty arrays if you put this UPS code in the Amazon Search Box. 633841997187
Question:	How do i get an nrc certification ? how much is it ? whom do i pay ? thank you
Answer:	Dear Spa friend,you do not need use POLYTRANS Hot Tub Spa Mineral Sanitizer Sticks with silver,because POLYTRANS included 0.92% silver nitrate.

Product description

RADEX RD1503+ Outdoor Edition geiger counter, high accuracy radiation detector, dosimeter

• UPGRADE Outdoor Edition - better protected
• Combined Beta, Gamma and X-Ray radiation detection.
• Detection range of 0.05~9.99 µSv/h (Micro Sieverts per Hour) or millirems
• Audio alarm - Vibration Alarm - Backlight
• Pre-calibrated, Accurate (+/- 15%), Fast (40 second cycle if low, Immediate if high)

User questions & answers

Question:	Why do they show it in use near hv transformers? does it also detect em emissions in that range
Answer:	No, you would need and EMF (electromagnetic field) detector for that: https://www.amazon.com/Advanced-Electro-Magnetic-Detector-Monitor/dp/B007ZBETWC/ EM emissions are non-ionizing radiation, which means the particles do not have enough charge to cause damage to tissue. Geiger counters detect ionizing radiation, the dangerous kind: Alpha, Beta, Gamma, X-ray, etc. Illustration: https://quartarad.com/wp-content/uploads/2018/10/ionizing-radiation.jpg https://quartarad.com/wp-content/uploads/2018/05/types-of-radiation.gif I hope this clarifies matters a bit!
Question:	Is this detector EMP proof
Answer:	As a former designer of electronic circuits, I can opine with 99% certainty that it is NOT EMP proof. I say that because the outside is plastic (a non-shielding material), and the LCD screen also would not block radiation. I think to add EMP protection would raise the cost considerably! FYI, I store my detector, when not in use, inside a metal container (with other electronics) because of its vulnerability to EMPs.
Question:	What is the difference between this model and the RD1503+ without dosimeter model
Answer:	This model does have the dosimeter function (see "DOSE" on the LCD screen), which means that it can switch between immediate radiation levels ("NOW") and accumulated dosage over time ("DOSE").Very useful when working in environments with even slightly raised radiation levels (warehouses, junk yards, granite canyons, treatment plants, etc.)
Question:	Can it detect all of "alpha", "beta", and "gamma
Answer:	It detects beta, gamma and X-rays. No Alpha because it is redundant and unnecessary. Alpha particles are relatively "large" and won't pass even through a sheet of paper or a layer of skin, let alone plastic casing of a detector. It also emits only a few inches from source. Illustration: http://images.slideplayer.com/32/9849845/slides/slide_10.jpg One would need a special "pancake" appliance to detect it, and those cost up from $ 500. In my opinion, those are only useful for conducting experiments in a lab environment, or under some very specific circumstances. Another reason for not detecting Alpha: nearly every radioactive isotope that emits Alpha will also emit a lot more beta and/or gamma (usually both), which will be detected by the sensor. Hope this clarifies matter a bit.

Product description

Are you looking for the most compact and military level accurate Geiger counter to check radiation, radioactive sources and keep an eye on the nuclear levels around? This SOEKS meter is our newest and smallest dosimeter and uses highly sensitive SMB20-1 Geiger Muller tube and offers the perfect solution for discrete and fast radiation detection. Small and compact, this nuclear radiation detector is capable of finding radiation in objects, environments, and helps monitor radiation dose in an instant.

Every time a nuclear radioactive particle is detected, meaning the atom hits the Geiger Muller tube, you will hear a click familiar with the old Geiger counters and see a red flash in the LED lamp near the radiation sign on the device. It can be easily configured that the device operated without any sound or light, so that you can measure radiation discreetly without drawing attention to places where others might be uncomfortable.

This personal dosimeter is a must-have for personal safety and nuclear disasters like Chernobyl or Fukushima. It gives you fast and accurate reading spanning a range of 0.01 to 999 uSv/h.

Features:

Almost instant detection for Beta, Gamma, and X-ray radiation

Large military grade SBM20-1 Geiger Muller tube along the whole body of the meter provides high sensitivity and accuracy

Dosimeter function shows cumulative nuclear radiation dose absorbed over time with a press of a button

Working time of 100+ hours on a 2 x LR44 batteries make the dosimeter always ready and affordable to use

Visual and audio indication of radioactive particles is turned ON by default for easy testing of the area and objects

Manually set thresholds for radiation background and dose to get alarmed when those are reached

Outstanding detection range in 0.01 uSv/h (micro Sieverts) increments

Package Includes:

1 x Personal Geiger Counter

1 x Manual

2 x LR44 batteries

• PERSONAL GEIGER COUNTER and DOSIMETER - This personal dosimeter is small and compact enough to be on your person at all times and to detect the radiation levels of any object or environment. You can use it for detecting radiation in toys, jewelry, antiques, construction materials, marble, food, and water.
• SUPER FAST DETECTION - This Geiger counter radiation detector almost instantly detects Beta, Gamma, and X-rays to provide you with the most accurate knowledge at top speeds.
• SENSITIVE & ACCURATE - This dosimeter radiation detector is fitted with a large military grade SBM20-1 Geiger Muller tube so as to provide high sensitivity and accurate information with just the press of a button. Visual and audio information is turned ON by default.
• LONG BATTERY LIFE - This radiation meter provides you with a working time of 100+ hours with 2 x LR44 batteries which makes this dosimeter always ready for use. PRO TIP: order extra batteries to replace the originals if the meter does not stay ON.
• IMPRESSIVE RANGE - This digital Geiger counter has an outstanding detection range of 0.01-999 uSv/h. This range is useful for detecting up to 999 Sieverts or 99,900 rem.

User questions & answers

Question:	How does the dosimeter work? Does it have to be turned on to track your dosage? Do you have to carry it at all times for a time period, like a week
Answer:	Great question! Any kind of nuclear dosimeters, including SOEKS 112, have to be turned ON and on the person/in the environment in order to record the radiation dosage. It has to be carried around to accumulate the dose. SOEKS 112 can show real time radiation or the accumulated dose with a single press of a button.
Question:	At what number on the display should I turn and run? Is this the same unit model sold by "Mirasafety
Answer:	You should see numbers below 0.40 uSv/h in the USA for natural radiation background. It doesn't mean you have to run yet but definitely something to investigate as to why the numbers are higher than naturally should be. If you see numbers higher than 1 uSv/h - it's a good idea to increase your pace with the toes pointing away from the object or the area with high radiation. SOEKS is the original manufacturer of this portable Geiger counter, including the ones that are sold by Mira safety. It's always better to get our detectors directly from the manufacturer as we guarantee that they are stored properly and up to date with the latest updates. Regards, Andrew from SOEKS USA
Question:	Will it or any software track history on iOS device
Answer:	No, this is a standalone Geiger counter/Dosimeter that makes and keeps all the measurements on the meter itself.
Question:	Why it's so slow? You can die before you see real radiation numbers
Answer:	When High radiation is detected, you’ll know it right away - there will be a spike in the readings, the audio clicks will become very frequent, and the visual indicator (LED) will blink rapidly. No way to miss that! For subtle changes in the radiation background the maximum time for the most accurate readings takes only 2 minutes, usually less. 120 seconds is not enough time to get a lethal dose even during the Chernobyl disaster. And the best part, that this small Geiger counter (dosimeter) reads up to 999 mSv (999 Sv), while the Geiger counters initially used in Chernobyl only read up to 34 mSv, hence the delay for the alarm and the emergency response.

Product description

The GCA-03W Digital Geiger Counters are useful for detecting and accurately measuring radioactivity.



The GCA-03W Geiger counter has an external wand probe that houses a Geiger Mueller tube. The external wand makes it easier to search materials and surfaces for radioactivity.



This Geiger counter's applications are: Education - Classroom demonstrations and nuclear experiments; Emergency Services and Domestic Preparedness for nuclear accidents. Compliance Verification and Radiation Screening for wastes and other materials. NIST calibration performed by independent laboratory that conforms to NRC regulations 10-CFR-34, 10-CFR-35 are available at additional costs through the manufacturer.



The Liquid Crystal Display is a 16 character by 2 line that provides an easy to read digital output. Switch selection allows GCA-03W Geiger Counter to measure and convert radiation (counts per second) into in mR/hr or mSv/hr. Time selection switch allows Counts Per Second (CPS) or Counts Per Minute (CPM) mode. All Geiger Counters are factory calibrated to insure an accurate measurement.



Data Output Jack: Outputs either Serial Data (default) or TTL logic pulse for each radioactive particle detected. Jumper switch selection. The serial output is the counts per second sent via USB cable (not included) to our Windows PC Geiger Counter Graphing program (free download from company website) for charting and recording the measured radiation over time. Secondary indicators; audio (clicks) and visual (LED) included.

User questions & answers

Question:	does it detect alpha
Answer:	works in any liquid.... as a disinfectant, anti-viral, anti-bacterial, anti-fungal... if it makes water softer I don't know...
Question:	On the 6th image I see a lage kit, is it all included
Answer:	There is Aluminium in it don’t use it causes Alzheimer’s just turn of your chlorine or bromine generator and use food grade 30% Peroxyde i use 1 cup a week for 450 gallon spa don’t overdose or pipes might leak !
Question:	How far away can this detect beta and gamma radiation
Answer:	It is not indicated on the bottle.
Question:	Could you recommend a test source compatible with this
Answer:	Unit is not heated. You put warm water in it.

Product description

The WMD Geiger Counter is hundreds of entirely new face melting sounds. A high gain modern preamp drives an 8 bit computer, creating sounds which range from nice (tubey overdrive, lofi aliasing, hot gated leads) to total madness (impossible amounts of gain, multiple octave foldover, harsh digital data errors, and piercing sculpted noise). This is NOT a modeling pedal, it turns the fundamentals of digital into a source of extreme distortion.

• High Gain Modern Preamp
• Dramatic Tone Control with Disable
• Super Hard Epoxy Powder Finish
• Hand Wired True Bypass
• Standard 9V Power Jack

User questions & answers

Question:	Will it detect alpha, beta, and gamma at the same time
Answer:	Yes. It detects alpha, beta, and gamma at the same time.
Question:	Are these ansi n323 certified first accuracy
Answer:	This unit is calibrated in GQ Electronics Lab, not others. It is a general-purpose Geiger Counter.
Question:	will it detect radiation in water
Answer:	If your looking to "see" the radon particles in the water probably won't notice much difference between the water and background radiation unless it was a significant amount... I would recommend putting the water in a glass or beaker and set the monitor on top to make readings... I may try that myself and see what results are if any..
Question:	Does this unit detect and mesure the radiation from a smoke detector
Answer:	The GM tube of the GMC-600 Plus is a pancake one with a thin Mica Window. This allows also Alpha radiation to enter the GM tube and to detect it. A smoke detector can work with Am-241 isotopes and uses Alpha radiation for smoke detection. But all detetctors I know are very well shielded, so no Alpha radiation weill leave the smoke detector. Therefore, no external radiation detector will be able to detect the internal Alpha radiation of Am-241! Regards Uwe Z.

Product features

Specification:

• Radiation Detection: Alpha, Beta, Gamma and X-Ray .
• Detection Dose Range: 0 ~ 4250uSv/h
• Detection CPM Range: >1,000,000 CPM
• Minimum Detectable Energy Range: Beta, Gamma, X-Ray: ~0.1 MeV, Alpha ~2.0 MeV
• Own Background: 0.2 Pulses/s
• Working Voltage: 3.2-4.0V
• LCD Display: Dot matrix with back light
• Working power: 0.045W - 0.2W
• Power: 3.6V/3.7V battery / USB power/Rechargeable

Open Protocol, Online Support, Free Software

GQ GMC-600 Plus provides open GQ RFC1201 communication protocol for easier system integration.



User is able to operate the unit by sending the serial commands.



User is also able to write customized software.



QQ Electronics website provides online technical support forum for easy and fast support.



User can download and try the exact copy of GMC-600 Plus user interface demo software before you buy it.

Product description

The WMD Geiger Counter - Civilian Issue is 32 killer sounds from the original Geiger Counter. WMD stripped off the majority of the controls and took $100 off the price. This is for those players who want to dial in a tone quickly and save pedalboard space.

• Stomp Switch: handwired and true bypass, so it won't affect your tone when disabled.
• Gain: use this to hit the Function tables harder or softer to produce different amounts of harmonics
• Tone: use lower settings for fewer upper level harmonics
• Function: Push the knob in to activate the Low Fidelity mode for each preset. Low Fidelity mode is indicated by the decimal point on the display
• Volume: Sets the output volume of the GCCI which can be up to 5Vpp, enough to really crush your amp's input stage

Product description

RADEX ONE - geiger counter and radiation dosimeter (radioactivity indicator) is designed to measure ambient ionized radiation types Beta, Gamma and X-ray, radioactivity of materials and products, as well as the accumulated radiation dose received.



Features:



- Beta, Gamma and X-ray detection



- Very fast: immediate result in 10 seconds, best result in 30 secs.



- Compact and portable design



- Same sensitivity and accuracy as a full-size geiger counter



- UNIQUE: Accumulated (not just immediate) dose



- PC connection via USB cord (provided).



- Software download from www.quartarad.com / Support / RD ONE and MR107:

https://quartarad.com/radex-one-data-center/

User questions & answers

Question:	Does this also detect and measure Radon gas
Answer:	Radon gas emits Alpha radiation, which Geiger-Mueller detectors cannot see. The Alpha particles will be stopped by the casing of the detector and will never be counted. If you really want to detect Alpha particles, you need a "scintillation" detector, that will have a microscopically thin window to allow the particles into the detection chamber, typically of an aluminized mylar sheet. This detector states it will detect beta type and gamma / X-ray radiation only.
Question:	what is the difference between this version and the outdoor version that costs $2b more
Answer:	I don't have the outdoor version, but I would expect that it is more ruggedized.
Question:	This is scaled to detect exposure in the µSv range. Can it be switched to detect exposure in the Sv range
Answer:	No, that would not be practical. Sv (sievert) range is abnormally high - it's Chernobyl-level exposure and instant radiation sickness. 1 Sv (sievert) = 1000 mSv (millisieverts) 1 millisievert = 1000 uSv (microsieverts)In most households radiation levels are circa 0.20 uSv/h (microsieverts per hour)Illustrated article with real-life examples is here:https://www.allianz.com/en/about_us/open-knowledge/topics/environment/articles/110407-radiation-how-much-is-harmful.html/
Question:	Will this device be just as effective in radiation detection if it's inside a shirt pocket
Answer:	Yes, the fabric would block little if any background radiation. It has many modes so you can have it display a received dose or the ambient radiation.

Product features

RADEX ONE compact, personal Radiation Detector for everyday life.

Radiation dosimeter is designed to measure ambient ionized radiation, as well as radioactivity of materials and products, and the accumulated radiation dose received.

Exceptionally calibrated, scientifically-tuned engineering equipment for common use.

The newest model from the RADEX brand - since 1992.

Beta, Gamma and X-ray detection - the dangerous ones.

Alpha radiation particles can't penetrate a sheet of paper or a layer of skin. Beta and Gamma (X-Ray) radiation goes though much tougher materials.

RADEX ONE is specifically calibrated to detect and alert about dangerous radiation.

Uses low-voltage SBM-20-1 Geiger-Muller tube (the sensor) for detection. Calibrated with Cesium-137 isotope in our lab.

Ambient Radiation dose and Accumulative dose

One of the great features of this handy device is the Accumulative Dose mode, that shows how much radiation was detected over time, and not just immediate results.

Accumulative dosage is important and a rare feature for radiation detectors: most show immediate radiation levels only, and not prolonged exposure.

See what you have been missing.

Radioactive materials are used in many consumer products. The most common of these is some smoke detectors which use radioactive Americium-241 to detect smoke particles in the air.

Other sources: natural granite, tobacco smoke, medical procedures such as Thyroid Radiation Treatment and contaminated produce.

Normal levels (sea level) are 0.10 - 0.30 uSv/h

Very fast: immediate result in 10 sec, best in 30 s.

PC connection via USB cord (provided)

Extremely sensitive: full-size GM tube inside!

Pre-calibrated and certified.

No additional calibration required for almost a decade (under normal conditions).

Manufacturer direct and factory-fresh.

1 year warranty replacements.

Product description

Properties:

High sensitivity

Large measuring range

Advantages of long life.

Use of sophisticated military GM tube as a core sensor. Use:

material inspection

environmental test

Radiology protection

Radiopharmaceuticals Screening.

Specifications:

Detectable species: beta gamma x-rays

Sensor type: GM tube.

Energy range: 50 kev-1.5 mev less than 30%.

Relative intrinsic error: less than plus or minus 10%

Sensitivity: 80 cpm / UPS / co-60

The maximum dose equivalent rate: 99.99usv / h

Voice Source: True Particle Tone / Alarm Tone / Mute.

The use of ambient temperature: -25 ~ +45 ℃.

Relative humidity: less than 95%

Power supply: 2 x AA batteries (not included), can be operated via the USB port, if you need a long-term monitoring time. Scope of delivery:

Package include: 1 x radiation detector.

• ➤ The geiger nuclear radiation detector comes with audible and visual signals integrated for the level of radiation detected.
• ➤ Use of sophisticated GM tube as central sensor. It has automatic data recording.
• ➤ High sensitivity, wide measuring range, long lasting advantages.The daily use of nuclear radiation detector helps to avoid radiation hazards in daily life.
• ➤ Compact and portable, the operation interface is simple and clear, easy to use.
• ➤ It can be applied to the inspection of materials, environmental tests, radiological protection, radiopharmaceutical detection, etc.

User questions & answers

Question:	where is this made
Answer:	I believe its made in China. No sticker, but there are asian letters all over.
Question:	What is the operational measuring range sensitivity in Sieverts
Answer:	Please read the description provided by the manufacturer in the Amazon add for the product.
Question:	Why is there a crystal necklace in the image
Answer:	Perhaps it was the product tested so that there was a visual display on the device
Question:	does this have an audible alert and or "click" option
Answer:	It does have some kind of clicking while its on, but not the loud audible alert.

Product description

GQ GMC-600 is a new generation Geiger counter developed by GQ electronics LLC, Seattle, USA. It can log the data to Server via Wireless Wi-Fi connection and internal memory at same time. build-in Wi-Fi ready, stay connected with GQ Geiger counter world data map website. free Online history unlimited data storage and Geiger counter world map service. Get the reading from anywhere of the world. Software Submit the data every minute. It is time to get this monitoring instrument. real-time testing evaluation, scientific testing on sample like: building material, hospital radiation therapy monitoring for cancer, food, water, indoor/outdoor, x-ray, and more. real-time graphic, text and large Font mode(record radiation data and play it back later). this is a ready to go set. Everything included. No any adjustment needed. It can be placed anywhere and then read the data. the GQ GMC-600 digital Geiger counter is an enhanced GMC-600 of all previous models. It installed a high sensitive Pancake Geiger tube sbt-11 for alpha, beta, gamma and x-ray radiation detection. It added new features, such as Wi-Fi connectivity on board, user defined website Wireless data logging to Server, new graphic ui, feature expend interface etc..

User questions & answers

Question:	What is the difference between this and the gmc-600 plus geiger counter? the price of this is way less than the gmc-600 plus which looks similar
Answer:	After you receive the GCA-06W Geiger counter, you contact the manufacturer, Images SI Inc., to ship the GCA-06W to the manufacturer for an NRC certification. The cost for the NRC certification is $125.00 plus shipping. The GCA-06W is sent to a independent U.S. government licensed lab that will perform the NRC certification. The process takes about two weeks after receipt of the GCA-06W by the manufacturer.
Question:	What is the difference between this and the 700 version
Answer:	Good question. This does not maintain the pH. You would still have to do that with your chemical program

Product description

GMC-500 is a new generation Geiger counter from GQ electronics, USA. It can log the data to Server via Wireless Wi-Fi connection and internal memory at same time. build-in Wi-Fi ready, stay connected with Geiger counter world map free Online history unlimited data storage and Geiger counter world map service. Get the reading from anywhere of the world. Software Submit the data every minute. It is time to get this monitoring instrument. real-time testing evaluation, scientific testing on sample like: building material, hospital radiation therapy monitoring for cancer, food, water, indoor/outdoor-ray, and more.. real-time graphic, text and large Font mode(record radiation data and play it back later) this is a ready to go set. Everything included. No any adjustment needed. place it anywhere and then read the data.

User questions & answers

Question:	I'm going to have a radioactive iodine treatment will this device detect the radiation being admitted from my body
Answer:	Yes, I would purchase a CS-137 radioactive isotope with an activity of 10 uCi .
Question:	what's the difference between this and the plus version
Answer:	Thank you for bringing this to our attention. We had removed that photograph a long time ago. And I assume you are looking at the photograph that shows a sample of the Images SI Inc.'s product line. No you are not receiving all those products. You are only receiving the GCA-06W Digital Geiger counter. I have contacted Amazon to have that photograph and another photograph removed.
Question:	Does this product detect alpha, beta, and gamma radiation
Answer:	All GM tubes saturate at high radiation levels. This particular GM tube would saturate around 10,000 pulses per second. We have laboratory tests up to one Rad of radiation. At this high level the Geiger counter is still responding properly. We do not have the facilities to test above one Rad radiation level to determine how this Geiger counter would respond. Sorry. If you want something to detect 1-10 Rads of radiation I would recommend purchasing an old 1960's ionization chamber civil defense meter off of ebay.
Question:	what's the difference between the gmc-500 and the gmc500 plus
Answer:	Yes, ready means it is ready to be NRC certified. You would need to spend an additional $125.00 to have this certification performed. The Digital Geiger counter is ready to use, with or without the NRC certification. The NRC certification proves the accuracy of the radiation readings.

Product description

ATTENTION:   As of August 1st, 2013, Quarta-Rad upgraded RADEX 1503 to RADEX 1503 Plus. Upgraded firmware, additional features, and cost the same as RADEX 1503. Don't be fooled by online vendors selling old and unsupported RADEX 1503 model as new. When you buy RADEX 1503 online, make sure it is RADEX 1503 Plus (Radex 1503+)

Now there is a better, stronger and more advanced version of our best-selling workhorse – the RD1503.

Ever since the introduction of the original RD1503, customers have been asking for additional functions and requested certain improvements on the existing design. We have listened and incorporated many new capabilities into RD1503+:

New and Improved Features of RADEX RD1503+



  + Graduated change of a threshold signal in the range from 0.10 to 0.90 µSv/h with an 0.10 µSv/h interval (available in individual settings).



  + Value of the background dose rate is saved even when the device is turned off.



  + Now displays the difference of the dose rate between the averaged and background values.



  + Includes vibration signal and audio alarm (both adjustable).



  + Added animation of the pressed command button (the icon of the button starts blinking on the display).



This new device allows a quick and easy way to check radiation background of top soil, non-edibles and interior premises.

The quality of indication of any dosimeter depends primarily on the built-in detector of ionizing radiation. RADEX RD1503+ contains a low-voltage SBM20-1 type Geiger-Muller counter of beta- and gamma-radiation which is found used in professional dosimetric equipment.

An expert scientific tool that’s made for an average Joe.



Quick, Simple, and now better than ever!

User questions & answers

Question:	where is this product poduced and manufactured
Answer:	According to the radiation certificate that is included in the package, the RD1503+ monitor is manufactured by the QUARTA-RAD Ltd company in Moscow, Russia. http://quarta-rad.ru
Question:	Is this something i can use in a supermarket to check food for radiation? i don't trust things coming from the pacific ocean because of fukushima
Answer:	Testing food in general is one of the most common questions we receive and also happens to be one of the most difficult ones to answer. In short: - Can food be tested with a hand-held Geiger Counter? Yes. - Will it detect elevated levels of radioactive materials, if present? Yes. - Is it absolutely safe to eat your fish after you scanned it and the result was negative? No, not necessarily. This is not a sensitivity issue, but is simply because radiation emitted from a tiny contaminant will be masked by the natural background radiation that's all around us. Technically speaking, everything is radioactive, even we are. So it would be like looking for a specific water drop in a pond. If the natural background radiation around you is .10 uSv/h and contaminant in the fish emits .02 uSv/h, then geiger counter will naturally continue showing .10, because that's how many radiation particles it is detecting in your immediate vicinity. This means that no matter how sensitive, expensive or calibrated your equipment is, the only way to be absolutely sure that food is safe would be to test it in a lab, where a piece of produce is placed inside a special lead capsule that isolates it completely from any background radiation. There is a lengthy scientific procedure of setting up such tests. Many manufacturers will claim that their detectors will works just as well, but as you can clearly tell, that is a marketing scheme. The only sure way of accurately testing food for radiation is in a lab. Period. Having said that, there are still ways to considerably improve you chances of detecting contamination. Here are some practical tips in getting the most out of your RADEX geiger counter. Whenever anything is measured for radiation, the mass / size of the object being scanned matters. Don't try to detect radiation in a single berry, a mushroom or a cup of water. Unless these are highly contaminated, there would be few particle streams emanating from a smaller volume hence the chances of detection are that much lower. Instead, try scanning an entire basket-full of produce, or a tank of water - the number of particle sources would be that much greater and easier to detect. If it's fish your are measuring, try to have as much of that tuna as possible. Turn the unit on and place it right next to the object (you can use a simple plastic bag to protect the unit - that won't effect sensitivity) for about 40 seconds. Then move a few inches to the side, and so on: continue displacing the detector by the distance of its width every minute or so, moving alongside of the object being scanned. So basically from head to tail. That would give you the highest chances of detection. However, please keep in mind, that even if after scanning it this way, there is still a chance that it may contain radioactive elements that are above the permissible levels for digestion. This is why we NEVER recommend to use Geiger counters for food testing unless in dire situations. We hope this clarifies matter a bit.
Question:	what are the minimum sensitivities for beta/gamma? IE: how many KeV in those bands
Answer:	Gamma: 0.1 - 1.25 MeVBeta: 0.25 - 3.5 MeV
Question:	Does it use a cylindrical GM or a PANCAKE GM tube
Answer:	Cylindrical low voltage SBM20-1 tube. Only does Beta and Gamma. Its does work well. A nuclear plant recently had a leak about 245 miles north of me, and it went bats as I was downwind and it showed elevated radiation at 6 times my normal background for 45 seconds so I know I caught a wisp of it. This is not professional lab equipment, but is good value for what I paid for it. The battery life is awesome too with LSD rechargeable NiMH AAA batteries. I run it 24/7. At this price, I do not really care about tube life.Just do not expect professional grade results from it, but it is good enough and a good value for the money.