10 best dosimeters

• 🎁EMF Meter Function - Testing the magnetic field for home use mainly
• 🎁Measure Radiation - of TV, induction cooker, rice cooker, refrigerator, computer, for low-frequency home appliances, electrical wires, etc
• 🎁Sound-light Alarm * When the test result exceeds the safe value, the instrument will alarm automatically
• 🎁Data Hold & Max Measurement - One-key lock the radiation value
• 🎁Large & Clear LCD Display - of the values for easy reading.

User questions & answers

Question:	What's the difference between this and $300+ rf meters? my 13yo son is doing a science fair project on cell phone radiation. thanks
Answer:	This EMF meter measures 60 Hz (up to 300 Hz) frequencies. That's basically power line type electro-MAGNETIC radiation. The cell phone radiation is RADIO frequency radiation in the Mega or Giga-Hz range. So, this meter will not work for his project.
Question:	Can this be used to detect electrical radiation from electrical boxes on the side of the apartment building where we are living? we are concerned that there might be a lot of electrical toxicity coming from that into our unit
Answer:	Yes, but it only detects EMFs. There is no such thing as electrical toxicity, but there is ionizing radiation, from high voltage electrical fields, or high strength magnetic fields, hence electromagnetic field. Just look up the current data for recommended levels of exposure, then set the meter for that level. Then examine the areas you occupy for the length of time required for exposure limits. If you exceed the limits, replaced the device causing the problem, or relocate the occupied area for less total time. Another comment talks of all the different devices. I can tell you right now, every single AC device produces EMF. All of them. It's not about whether you are exposed, it about how much, and for how long. The alarm clock thing has been known for over 40 years. Just like CFLs if used within less than 15in is cancerous.
Question:	Can it be used to detect ghosts
Answer:	This will not detect ghosts, even if you believe it will. This detects electro magnetic fields. So unless you believe ghosts are produced every second by electricity, the Earth is surrounded by a ghost, and everyone's phone houses ghosts, this will not help you.
Question:	Has anyone had a professional come and collaborate your reading from this meter
Answer:	Yes. I tested it with calibrated equipment. It reads 0.0 milligauss up to 1.6 milligauss of ambient magnetic field. In other words, you might think there's no field when the meter reads zero, even though there could be as much as 1.6 mG present. At higher fields, it actually reads 2.5x too HIGH (reads 250 in a 100 mG field for example)). WAY inaccurate. Also the confused "English" manual claims it also reads "electric" field. It doesn't. And it doesn't read RF, microwaves, cell towers, etc. either. However, the meter is poorly shielded, so when placed near a leaky microwave oven, the meter circuit is interfered with, and it sometimes reads something, although the number is meaningless.

Product features

Specifications:

Number of Axis: Single Axis Inductive Head

Sampling Rate: 0.5 Seconds

Test Mode: Bimodule Synchronous Test

Over Range Indication: LCD Displays "HI"

Operating Temperature: 0～50℃, Relative Humidity 0～80%

Storage Temperature: -10～50℃, Relative Humidity: 0～70%

Power Supply: 3 * 1.5V AAA Battery (Included)

Product description

RADTriage Radiation Detector is a U.S. Military-grade personal dosimeter that instantly detects radiation exposure in the event of a dirty bomb, nuclear reactor accident such as Fukushima and Chernobyl and other sources of radiation. This always-on wallet card/badge radiation detector does not require batteries or calibration. The sensor strip instantly turns darker when it detects harmful levels of radiation. The latest version, Model 50 (this model), begins alerting at 50 mSv. This product was recently extensively tested --along with other dosimeters over a period of nearly 2 years by the Israel Ministry of Defense (IMOD). IMOD selected our dosimeter and we have just received the first order for 8,000 RADTriage with VLLD (visual lower limit detection) of 50 mSv.

• RADTriage 50 Personal Radiation Detector for Wallet or Pocket, Nuclear Radiation Detector, Electromagnetic Field Radiation Detector, Anti Radiation Dosimeter Radiation, Ready-to-Go Portable Nuclear Radiation Detector Monitoring Instrument, Radiation detection: Beta, Gamma and X-Ray. Fits in wallet or badge holder.
• Digital Nuclear Radiation Detector Monitor Meter Personal dosimeters Marble Detector Nuclear Radiation Meter Beta Gamma X ray Data Marble Tester ore Gamma Rays Uranium Monitor. Instant detection of radiation from sources such as nuclear reactors, nuclear weapons fallout and dirty bombs
• Made in the U.S.A | U.S. Military-grade and field tested and approved by U.S Dept of Homeland Security
• Shelf-life may be extended up to 10 years by storing in the freezer. Once removed it will have a usable life of at least two years.
• No batteries or calibration needed | Impervious to an EMP Bomb (electromagnetic pulse)

User questions & answers

Question:	Does the manual referred to in the advertisement, come with the unit? If not what is it and where is it obtained. Thanks
Answer:	Of course it comes with a manual.
Question:	Is it reusable
Answer:	To keep card ready to use, put in freezer till you're ready to use it.
Question:	I have a meteoritw and several fossils id like to check for radiation. Will this suffice
Answer:	Possibly! Some radiation such as x-rays, alpha and beta particle would most likely show, but other radiation such as fast or slow neutrons would not. I don't believe gamma rays would be detected either, I'm not sure, I don't remember.
Question:	Is this one time use only
Answer:	For immediate detection it is a one-time use because the chemical-based sensor strip does not reset. However, it is also a cumulative sensor (a dosimeter) and will continue to darken if it later detects higher levels of radiation. For instance, if today it sensed 20 mSv of radiation it would alert you within a minute. And the sensor bar (the strip between the two rows of color bars) would stay at the that level. If later in the day it detected 50 mSv of radiation the sensor strip would darken and alert you within a minute. Again, the sensor strip would stay at that level. If the next day it then detected higher levels, say 2000 mSv, it would darken yet again and alert you. But it does not reset back to zero. This detector was designed for first-responders, hospital staff, nuclear facilities, the military, and any one else who needed an inexpensive way to alert one to radiation.

Product description

Gmc-500+ (Plus) is a new generation Geiger counter from GQ electronics. 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:	How do you charge this unit? It came only with USB cable
Answer:	The GMC-500+ can be charged by any standard USB power adapter, even a computer USB port. You can just connect the USB cable to any USB port.
Question:	Does it have GPS inside
Answer:	No. Only GMC-510, GMC-520 has GPS feature.
Question:	Will this detect if there is radiation in seafood that's in it's package, like in the supermarket or if seafood in a restaurant is safe to eat
Answer:	No, well only if it is been recently radiated. The problem with food radiation testing is it has to be tested in carbon form....burnt to ashes, then tested! Water content masks detection. So not useful for food
Question:	Will this detect radiation from a smart house? Phones, lights. Doorbells, routers.smoke detectors etc
Answer:	No. This device detects only short wave radiation (gamma rays, x-rays and beta radiation). You will need an electromagnetic radiation detector that detects longer waves like ELF's (extremely low frequency waves), radio waves and microwaves.

Product features

New model from GQ Electronics LLC, Seattle, USA

This GQ GMC-500+ Geiger counter is a portable nuclear radiation detector. It detects Beta, Gamma, X-ray radiation and can be used as continuous radiation monitor or used as a personal dosimeter to track the radiation received

.

Nuclear radiation is invisible but threatening to human health, environmental safety. For example, if receive 100 mSv radiation, the cancer risk increases.

This meter detects and visualizes the radiation in real time, give you a peace of mind. It can record the historical data for future analysis.

The thoughtful design provides easy-to-use basic features as well as advanced features for users want to explore more

Stand Alone Detection Mode

• Only need ready-to-go main unit
• Carry the main unit and detect the potential radiation around you any time
• Can be used as personal accumulative dosimeter (user time reset able)

Continuous Monitoring Mode

• Use with PC to continuously monitor the radiation anywhere, any time frame
• The main unit is designed to place, hang, hold anywhere
• Seattle, WA service center
• Online support forum community
• Phone & email support from Seattle

Basic Features

• Fast reading in seconds after turn on
• Accurate & real-time data
• Display CPM,uSv/h, mR/h in one screen
• Real time Recording
• Data record first, playback later
• Real time clock
• LED Visual & Audio Alert
• Large Text,Text,Graphic Display

Main Unit Build

• Small 5 x 3 x1
• Light & portable
• Two Geiger sensors
• Rechargeable battery
• Large LCD Graphic UI
• Adjustable Back lit
• Advanced CPU on-board
• Build-in internal flash memory
• Build-in WiFi module
• On-board speaker & Gyroscope

Advance Features

• Independent calibration factors
• Bar & line graph
• USB data port
• Data logging
• Submit data to any server in the world automatically
• Open Protocol

Data Viewer Software Converts Data to Universal Format

• PC GMC data viewer software is included free for downloading the history data. And the data can be saved as standard .CSV format file.

WiFi Data Logging to server for sharing the data

• Open Protocol for easy integration to other application system
• WiFi data logging to GMCmap server with free unlimited data storage.

iPhone APP provide easy access to data

• iPhone APP facilitated use with cellphone

Specification

• Radiation Detection: Beta, Gamma and X-Ray .
• Detection Dose Range: 0 ~ 42500uSv/h
• Detection CPM Range: 0 ~ 982980 CPM
• Detectable Energy Range: 0.1~3.0 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

Applications

This unit can be used to detect/monitor/measure low dose background environment either indoor or outdoor.

• Alert you once big incident happens: like dirty bomb, Fukushima, Chernobyl.
• Nuke plant environment radioactive plume like Fukushima
• Space radiation, air industrial and on airplane.
• Real-time testing evaluation and scientific testing on samples

Fruit and imported food radiation testing

The GMC-500 Plus can detect the radiation if the fruit has been radioactive contaminated.

Carry the unit with you to test air, food, water and personal environment

Radioiodine (I -131) Therapy

The GMC-500 Plus can be used to monitor the radiation level during the treatment and keep the family member at the safe distance. It can be used to monitor if any one is under I-131 treatment around you.

Use the GMC-500 Plus for Hospital Radiation Therapy Monitoring & Radio iodine Treatment Monitoring

Applications

This unit can be used to detect/monitor/measure low dose background environment either indoor or outdoor.

• Lab research, oil field, and material testing
• Stone collection, marble counter-top, building material and antique collection
• Real-time testing evaluation, scientific testing on samples
• Measuring on Antique radiation level like Vintage Fiesta Dinning Ware and others

Product description

RADEX ONE "Outdoor" - 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 (Windows) download from: www.quartarad.com / Support / RD ONE and MR107:

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

• Gamma, Beta and X-rays radiation detector, geiger counter (SBM-20-1 Geiger-Muller)
• 10 sec. measurement cycle. Quickest Geiger counter out there!
• USB to PC: Data Recording / Charting Software (download for Windows only)
• Very sensitive geiger counter. Detection range: 0.05~999.0 mcSv/hr
• Easy to operate. Very accurate. Newest geiger counter from Radex

User questions & answers

Question:	Does this detect non-ionizing radiation
Answer:	No. The non-ionizing radiation (light, radio waves, Electromagnetic fields e.g. microwaves) are not detectable by geiger counters. Geigers detect ionizing radiation such as Beta, Gamma and X-ray. Illustration: https://pbs.twimg.com/media/D2vqAz_UwAEUAhU.jpg Detector for non-ionizing Electromagnetic emissions such as microwaves, household appliances and power lines: https://www.amazon.com/dp/B007ZBETWC
Question:	Can this be used to detect radiation in food? I use Apple products, will I get on line support
Answer:	If someone puts a radioactive source in your food you might detect it, but most food is less radioactive then the concrete in the walls of your building. Also food could be used to shield this device from cosmic radiation, which means you would see a lower count rate in the presence of food.
Question:	does this device test NORM or radiation in pipe used in the oilfield business
Answer:	Generally yes, while this depends on radionuclides in such pipe, ie radium, radon, uranium, potassium and thorium. The Geiger detects Beta, Gamma and X-ray radiation, which are emitted by all aforementioned materials except for Radon gas.
Question:	Will there be software available for Apple devices
Answer:	No

User questions & answers

Question:	Is it made in texas or bought while living in texas from Russia
Answer:	This Product is made in Russia! You can buy the same product in Europe under brand name SOEKS 112, also made in Russia. for further informations please seach for 'Geiger-Müller-Zählrohre SBM 20-1'
Question:	Will this work for detecting iPhone radiation
Answer:	If you are absent this knowledge for this type of device, then you are not equipped fundamentally to operate this device.
Question:	Is there a USB rechargeable version of this
Answer:	No.
Question:	So this is in fact soeks
Answer:	Components are same.

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.

• Five independent measuring channels with alternate indication of data on the single liquid crystal display
• Built-in gamma, beta sensitive Geiger-Muller counter
• Automatic setting of measurement intervals and ranges
• Two-tone audio alarm of exceeded programmed threshold levels
• Audio signaling of each detected gamma-quantum and beta-particle

User questions & answers

Question:	would this device read radiation coming from cell towers
Answer:	Hello! Thank you for question! Yes, the device measures the radiation background around you, including radiation coming from cell towers
Question:	Does this device detect radiation in the gemstone (alpha-beta-gams-ect)some of Gemstones are treated by radiation for enhancement of color
Answer:	Hello, thank you for your question. Excuse us for the delay in answer. Yes, you can detect radiation in the gamstones (gama), but only with this device https://www.amazon.com/dp/B00CFKQNP4?ref=myi_title_dp This is a profecional terra for detecting radiation in wood, money and gemstones as well.
Question:	What is the approximate shipping cost for expedited shipping for qty: 5 to the usa (irvine ca
Answer:	We can offer you free expedited shipping for qty 5! Shipping company - FedEx or UPS. Delivery time - 5-7 working days. If you'll order from us, please, send us a message, that you need an expedited shipping.
Question:	In the first image, the terra-p has a "beta flux density" button whereas in the fruit image, the terra-p does not. please confirm which one is correct
Answer:	Hello, thank you for your question. The first image (with beta flux density button) is correct. On the images with fruits it is mistake, because there is another device - Terra P, not terra P + (they differ just by having this feature)

Product description

The dosimeter is pocket expressive. DKP-50-A provides the measurement of individual doses of gamma radiation in the range from 2 to 50 Roentgen. R at dose rates from 0.5 to 200. R / h The dosimeters are charged from the charger of the kit. ZD-5 or other constant voltage source, which has a smooth adjustment in the range from 180 to 250. B at a temperature of -40 ° to 50 °. S. Zamora The dosimeter's dosage under normal conditions does not exceed two divisions per day. Dosimeter. DKP-50-A requires careful handling: do not allow strikes, falls. For convenience of use, the dosimeter is shaped like a pen and worn in a pocket of clothing

• Vintage military dosimeter in form of pen
• Needs special charge from 180 to 250 DC voltage
• Gamma and neutron measure, not responds to alpha and beta radiation
• Soviet collectible military unit
• If nuclear burn happens - that unit will work, but for home peace use its not useful

User questions & answers

Question:	Can you reset the reading on this dosimeter
Answer:	There is special charger that can reset(charge) this dosimeter. It not included in lot, because this is more collectible than practical item. But I trying to find another way to charge it with piezo, hair, wool or other static electric. When will find - I will post video how to charge!

Product description

This detector can test electric field radiation and magnetic field emission to reach the optimal test result. It's widely used to test and learn electromagnetic radiation situation indoor and outdoor.



Features:

Data hold and clear LCD display, one-key can lock the radiation value and easily read the value.

Radiation assessment can remind you whether the radiation value is safe.

Easy to use and operate, easy to move or for on-site measurements.

Electromagnetic radiation monitoring: household and appartment, office, outdoor and industrial site.

Electromagnetic radiation test: mobile phone, computer, TV set, refrigerator and high voltage cable radiation test.

Radiation protection product test: test effects of radiation-proof clothes, radiation-proof film and other prevention articles.

Equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the clear LCD digital display after processing by control micro-chip.



Specifications:

Material: ABS

Color: black

Power supply: 3 * 1.5V AAA battery (not included)

Precision: 

Electric field: 1 V/m

Magnetic field: 0.01μT

Range: 

Electric field: 1-1999V/m

Magnetic field: 0.01μT -99.99μT

Reading display: 3-1/2-digit LCD

Alarm threshold value: 

Electric field: 40V/m

Magnetic field: 0.4μT

Testing bandwidth: 5Hz-3500MHz

Sampling time: about 0.4 seconds

Test mode: bimodule synchronous test

Operating temperature: 0~50℃ / 30℉~122℉

Operating humidity: relative humidity < 80%

Item size: 135 * 60 * 27mm / 5.3 * 2.4 * 1.1in

Item weight: 107g / 3.8ounce

Package size: 165 * 77 * 30mm / 6.5 * 3.0 * 1.2in

Package weight: 147g / 5.2ounce



Package list:

1 * Electromagnetic Radiation Tester

1 * User Manual

• One detector with two uses, it can test the electric field and the magnetic field radiation at the same time.
• When the test result exceeds the safe value, the instrument will alarm automatically.
• Data hold and clear LCD display, one-key can lock the radiation value and easily read the value.
• Radiation assessment can remind you whether the radiation value is safe.
• Easy to use and operate, easy to move or for on-site measurements.

User questions & answers

Question:	does it need batteries or is it charged with USB
Answer:	Batteries