Pocket Geiger Counter

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The most popular personal radiation detector we've ever sold, our pocket-sized UNDX-1, has been updated with new technology and features for 2013 - and we've lowered the price by $40! Now known as the UNDX-2, it is truly the perfect personal radiation detector. Worried about food, water & air contamination? What about radiation levels around your home? 
Our UNDX-2 Pocket Geiger Counter is extremely simple to use, rugged, pocket sized, fantastically sensitive, and affordable. Quite an impressive performer. It is ideal for everything from checking food to scrap metal for radiation contamination - to lab & industrial uses - as well as for Uranium prospecting.
The UNDX-2 instantly indicates levels of Beta, Gamma, and X-Ray radiation by a series of audible 'clicks' (and 'beeps at higher levels) from an internal speaker and by the compressed-scale meter.
At  low & background levels of radiation, the unit emits an audible 'click' for each particle or ray detected up to about 10 mR/hr. If the radiation levels rise above 10 mR/hr, the unit will begin to 'beep' with increasing frequency as the radiation level increases, becoming a continuous tone above 20 mR/hr.

The pocket size makes it very convenient  for industrial, covert & general use. Typically Geiger Counters have a separate probe requiring 2 hands to operate the unit. The all-in-one design of the UNDX-2 allows you to operate it with one hand leaving the other free. You'll be surprised at what you find radioactive around you. Bring the unit into an antique shop and find a wealth of radioactive antique items from
Radium clocks to Uranium glazed cups & saucers.

Designed to be simple to operate, the only control is a single button used to activate the unit.
Dual scale analog meter displays radiation levels in mR/hr as well as the international uSv/hr. The meter is now illuminated so readings are clear even in low light conditions.
An LED indicator alerts you of battery condition upon each use.
The UNDX-2 features an industry standard Halogen-quenched Geiger-Mueller tube with 3mm window.
Applications for the units are many and may include checking for environmental contamination, industrial, clinical, field, school classroom, home use, or wherever radioactive materials are present. Perfect for rock and mineral enthusiasts for its simplicity and convenience in identifying naturally radioactive rocks and ores, or for workers handling radioactive minerals, metals, and isotopes who are concerned about unknowingly bringing home contamination on their clothes and shoes.
Unit comes with the battery installed and is ready to use right out of the box.
1 year warranty on the electronics and 5 year warranty on the Geiger-Mueller tube.
We also include a small radioactive Geiger Counter Test Sample so
 operation of the unit can be verified at any time.

Proudly made in the U.S.A.

Uses a standard 9 volt battery ( included ) 

Detector Type Halogen-quenched Geiger-Mueller tube
with thin ( 3mm ) metal window
Detector Size 3/4" diameter x 3" long
Radiation Detected Beta, Gamma, X-ray
Display Unique logarithmic-scale analog meter
Operating Range 0 to 10 mR/hr range on analog meter.
Beeping at 20 mR/hr
Continuous Tone at 200 mR/hr.
Sensitivity Detects Beta at 35 keV with 90% efficiency, or
                    at 1,000 keV with 100% efficiency
Detects Gamma down to 6 keV at 25% efficiency, or
                    to 35 keV at 90% efficiency, or
                    to 100 keV at 100% efficiency
Calibration "Fixed" at factory to NBS, NIST, and NRC standards using Cesium-137 gamma source
Power Required One 9-volt battery ( included )
Battery Life Up to 50 hours continuous use
Temperature Range 14° to + 120° F (- 10° to + 48° C )
Weight 7.5 oz. ( 212 grams ) with battery
Size 6-5/8" x 3-1/4" x 1-3/8" ( 168 mm x 83 mm x 25 mm )
Indicators LED power indicator and audio for count rate
Audible Alerts 'Clicks' at 0 to 10 mR/hr
'Beeping' at 20 mR/hr
Continuous Tone at >200 mR/hr.
Warranty One Year on Geiger-Mueller tube,
Five Years on electronics
Country of Make USA

UNDX- 2 Pocket Geiger Counter: $239.00


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  • Shipping Weight: 0.8lbs

Copyright © 2013 United Nuclear Scientific LLC.