Geiger Counters
How to choose a Geiger counter
What a Geiger counter tells you
A Geiger counter, sold here as a radiation dosimeter, measures ionising radiation in the area around it and reports a dose rate you can compare against normal background levels. People use them to check building materials and stone benchtops, test imported goods and antiques, or simply establish what the background reading is where they live and work.
Fast reading or logging
The practical differences between models are detection range, how quickly they settle on a reading, and whether they log measurements over time. If you are testing objects rather than monitoring an area, prioritise a fast, stable reading. The Ecovisor adds nitrate, water and electromagnetic field checks to the same handheld, which suits a household that wants one meter rather than a radiation specialist.
Compare the types
 Pocket dosimeter |  Five in one meter | |
|---|---|---|
| Measures | Gamma, beta and X-ray, 0.01 to 999 microsieverts an hour | Radiation, nitrates in food, water quality and EMF |
| Size and runtime | 28 grams, about 100 hours | Colour touch screen, up to 24 hours on a charge |
| Suits | A pocket check of goods and materials | A household that wants one meter for everything |
| See | Soeks 112 | Soeks Ecovisor F4 |
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Common questions
What is a normal background reading?
It varies by location and altitude. Take several readings where you live to establish your own baseline before comparing anything against it.
Can it test food?
These units measure surface and ambient radiation, and the Ecovisor adds a nitrate probe for produce and meat. They are not laboratory instruments.
Do I need a licence to own one?
No. A Geiger counter measures radiation and emits nothing; anyone can buy and use one.