Best Geiger Counters

For more than 6 years we've compared, reviewed, and rated the world's most popular handheld Geiger counter. While most portable Geiger counters appear similar, the fact is there are important differences in features, performance, and functionality. Our focus is on personal geiger counters within the consumer/commercial mid-range, from $100-$600. We looked at functionality, construction, ease of use and of course, price - 6 dosimeters that illustrate the breadth of product offering now available.


At one time I was also looking for a Geiger counter to warn about potential radiation hazards, whether from radon laced granite countertops, contaminated scrap metal, nuclear plant discharge, depleted uranium waste, or even something as simple as in-flight atmospheric background radiation. I was shocked to learn how much low-level radiation we're exposed to every day. Even at home there are unexpected sources I hadn't ever considered. Now with the possibility of a dirty bomb attack even more apparent, it's easy to see the benefits of owning a personal dosimeter to tell me if I'm being exposed to harmful levels of radioactivity, and to protect me in case the unthinkable becomes a reality.

Mazur PRM-9000 Radiation Detector

Our #1 Pick is the PRM-9000 Geiger Counter by Mazur Instruments

5 stars

Manufactured in America, the PRM-9000 is the latest addition to Mazur Instrument's line of digital pocket Geiger counters. It features a large 2”, pancake-style Geiger-Mueller tube, the industry benchmark for low-level radiation detection. Indeed, the improved sensitivity of the Mazur PRM-9000 combined with real-time data collection, make it... Continue Reading arrow

S.E.I Inspector Alert Detector

Our #2 Pick is the Inspector Alert Handheld Detector by S.E. International

4 stars

The Radiation Alert Inspector, built by S.E International, is a versatile Geiger counter designed both for the casual user as well as industrial users and emergency responders. The Alert Inspector has been around a while and has stood the test of time. This is a handheld that really belongs in everyone's survival kit, especially if you live near a nuclear power plant... Continue Reading arrow

SOEKS Quantum Pro Radiation Detectorr

Our #3 Pick is the Quantum Pro Portable Geiger Counter by SOEKS

4 stars

Being a little older, when I learned the new Soeks Quantum Geiger counter was designed and built in Russia, I was a little skeptical. However, after 15 years the Soviet Union is long gone and in its place exists a flat tax entrepreneurial economy fully capable of turning legacy technology into modern world-class products. ... Continue Reading arrow

Gamma-Scout® Online Geiger Counter

Our #4 Pick is the Gamma-Scout® Online Portable Radiation Detector

3 stars

Coming in at 4th Place is the Gamma-Scout Online Handheld Radiation Detector. Weighing a trim 6 ounces, it's surprisingly light and compact, giving the impression of being a bit fragile. However, what it lacks in case strength it makes up for in rich functionality. While other Geiger counters offer basic radiation detection plus some minor enhancements ... Continue Reading arrow

Ecotest MKS 05 Geiger Counter at Amazon

Our #5 Pick is the MKS 05 Terra Pro Portable Geiger Counter by Ecotest

2 stars

The MKS 05 Terra Pro by Ecotest is a Ukrainian built counter that gets good marks for a clean, modern look and simple operating controls. It's a relative newcomer with quite a few showing up recently on Amazon. At first, we expected a primitive design given the location of factory. However we were pleasantly surprised at the modern workmanship... Continue Reading arrow

Quarta Radex RD1706 Pocket Radiation Detector at Amazon

Our #6 Pick is the Radex RD1706 Pocket Radiation Detector by Quarta

1 star

With one star in sixth place is the Russian Radex 1706 Radiation Detector built by Quarta. Following the old adage, "you get what you pay for", Quarta-Rad, has designed an inexpensive radioactivity dosimeter and found its place at the lower end due to simplicity and price. With a cost well under $300 this is indeed a very affordable Geiger counter for those on a limited budget... Continue Reading arrow

Radiation Scientist

Honorable Mention

Ecotest Terra P Digital Geiger Counter

ECOTEST TERRA-P Digital Geiger Counter

The Ecotest TERRA-P is a simple, handy, and affordable handheld dosimeter for continuous household monitoring and testing of radiation levels....

More Info
SOEKS Defender Digital Geiger Counter

SOEKS Defender Digital Geiger Counter

The SOEKS Defender Digital Geiger Counter measures radiation within a light, compact case featuring full color display...

More Info
SEI Monitor 4EC Analog Geiger Counter

S.E.I. Monitor 4EC Analog Geiger Counter

The S.E.I. Monitor 4EC Analog Geiger Counter with traditional analog display detects alpha and beta particles, gamma, and x-rays...

More Info


Basic Travel Case

Amazon Basics Travel Case for Electronic Devices

Amazon Basics Universal Travel Case with molded EVA-plastic exterior offers secure storage space and prevents scratches...

More Info
Radioactive Uranium Ore Sample

Radioactive Uranium Ore Sample (NORM)

Radioactive Ore Sample (NORM) Naturally Occurring Radioactive Materials. Low radioactivity - sample size and CPM activity will vary....

More Info
Radiation Alert OBSERVER Logging Software

Radiation Alert OBSERVER Logging Software

Radiation Alert OBSERVER Software collects, logs, and performs statistical analysis on data from radiation detectors. ...

More Info