SEP Geiger Counter


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About this product


  • Detect alpha., beta and gamma radiation with this Geiger counter
  • Learn about background and manmade radiation
  • Demonstrate GCSE radioactivity

Product overview

• Detect alpha., beta and gamma radiation with this Geiger counter
• Learn about background and manmade radiation
• Demonstrate GCSE radioactivity
• Suitable for children aged 11+ with supervision
• Required 1 x 9V battery (sold separately Order Code L46AL)

What can the Geiger counter do?
Test radioactivity in different experiments and find out about the background radiation surrounding us. Hear alpha, beta and gamma radiation through the Geiger counter even record events. With its LCD display and audible clicks you will get a clear indication of activity. The counter is powered by a single 9V (PP3) battery sold separately Order CodeL46AL.

What can the Geiger counter teach us?
Radiation is all around us in the form of background radiation which is created naturally in the rocks and earth, but which also occurs due to fallout from nuclear accidents. Specific radiation can be generated by radioactive isotopes, medical equipment and nuclear power sources. The Geiger counter uses an integral Geiger-Muller (GM) tube to detect radioactive activity. This is a great device to demonstrate the basic properties of radiation from KS4.

Rated 4 out of 5 by from Good inside but throws it away with a poor design outside Not impressed with the scanty (dated 2003) information leaflet. There's almost an arrogance that you know what you're buying and must therefore be educated. This device was clearly aimed at the school education population - but that's not me. So please gear up wake up and provide a zappy happy chappy enthusiastic booklet. Also it would be useful if they took the excellent inside and provide the tube detector outside with a .5 metre lead with a durable body clip for the tube - and a handle on top of the device. Also a meter showing which type of radiation being detected would be very useful. It would certainly cost more. But give us a choice. Finally please as a minimum improve the radiation detector click and provide a volume control - thanks a lot.
Date published: 2017-02-28
Rated 5 out of 5 by from My first Geiger counter For some time I have been looking for a portable Geiger counter that I can use to assess naturally occurring radioactive material and this is my entry level device. Being responsive to alpha, beta and gamma emissions and displaying counts it is ideal for checking mineral samples in the field.
Date published: 2016-11-03
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Product Specifications

Computer System Requirements:


Number Of Included Parts:


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Power Specifications

Power Source:


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Physics Kit

Recommended Age:



Package Contents:

1x SEP Geiger counter

Is the same or as sensitive as the original Maplin Geiger Counter which had three settings, 0.5,R/hr, 5mR/hr and 50mR/hr?

Asked by: Charles
Use of the item is explained in the manual under the downloads tab.
Answered by: Dominic
Date published: 2016-07-10

How sensitive is this meter? Will it be able to detect the emissions from Vasaline Glass (aka Uranium Glass)?

Asked by: George
Please bear in mind this is designed to be an educational kit, not a accurate safety device, so we do not believe it would be sensitive or accurate enough for your needs.
Answered by: Russell
Date published: 2015-12-22

Is it battery or mains operated?

Asked by: Paul
This item is powered by a single alkaline PP3 battery.
Answered by: Dominic
Date published: 2015-07-17
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