Last updated: 16/10/2022

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A Geiger counter is a device that measures the rate of ionizing radiation in an area. It detects gamma rays, which are high-energy photons emitted by radioactive substances. The name comes from its inventor, Hans Geiger (1882–1945), and his colleague Wulf Fritsch (1904–1979). They developed it in 1928 at the Physikalisch-Technische Reichsanstalt (PTR) in Berlin.

Geiger Counter: Bestsellers and current offers in the UK

The best geiger counter in the UK: Our selection

Point Matrix LCD Display

The Point Matrix LCD Display is the perfect way to stay on top of your radiation levels. The real-time graphics mode offers visualized changes in radiation in real time, so that you can easily see when the data changes. The USB data connection makes it easy to connect and charge with your computer or laptop. And the big font and text mode provides easy reading and maximum data information.

Radiation Detector for Smartphones

This product is a personal home purpose radiation detector for smart phone preliminary simple measurement. It uses semiconductor sensors to measure radiation (gamma, x-ray) and has an ultra -compact design. It also has ultra -low power consumption and no external battery. This product is easy to use and can be connected to the earphone jack (3.5ph) of the smart phone . The display will show the radiation dose rates, radiation pulse count, and measurement time in smartphone applications.

Geiger Counter: Frequently asked questions

What types of Geiger Counter are there and what determines a good product?

There are two basic types of Geiger Counter. The first type is the desktop model, which can be used to measure background radiation levels in your home or office. These units typically have a range from 0-10 mR/hr and cost between $200-$300 depending on features such as LCD display, audible alarm and data storage capabilities (memory). The second type is called a Survey Meter because it has an extended range that goes up into the hundreds of thousands of counts per minute (CPM) for measuring high level radioactive contamination in areas where nuclear accidents occur. This unit will also have all the same features as above but with higher sensitivity so you don’t need to stay close by like you would if using a standard meter at lower ranges. A good survey meter should start around $500 -$1000 depending on how many channels it has built-in for detecting different isotopes and other options available including GPS capability etc.

There are several factors that determine a good Geiger Counter. First and foremost is the quality of the electronics, which includes high voltage (to get more counts per minute), low noise circuitry, fast response times to changes in radiation levels and an accurate count rate display. The second factor is how well shielded it is from background radiation so you can detect weak sources such as cosmic rays or radon gas leaks without being overwhelmed by stronger signals from natural radioactivity in your environment. Thirdly there’s size – if it’s too big then you won’t want to carry it around with you all day. Finally there’s price – we don’t sell cheap junk but neither do we believe that paying through the nose for something just because its got a fancy brand name on it makes sense either.

Who should use a Geiger Counter?

Anyone who wants to know what is going on in the environment around them. The Geiger Counter will allow you to measure radiation levels and determine if there are any areas that may be hazardous or dangerous for your family, pets or livestock.

Based on what criteria should you buy a Geiger Counter?

There are a number of factors to consider when buying a Geiger counter. The most important factor is the type and size of radiation you will be measuring, as this determines which detector technology should be used in your device. Other considerations include whether or not you need an analog meter (for cost savings) vs digital readout, battery life and portability requirements. For more information on selecting the right geiger counter for your needs please see our article “How To Choose A Radiation Detector”.

There are several things to look out for when comparing a Geiger Counter. First of all, you need to check the type of radiation that it detects and whether or not this is what you want. You also have to make sure that it has an audible alarm so that you can hear if there’s something wrong with your surroundings. It should be easy-to-use as well because some people may find complicated devices hard to use at times. Finally, most importantly, make sure that the device works properly before buying one.

What are the advantages and disadvantages of a Geiger Counter?


There are many advantages of a Geiger Counter. The first is that it can be used to detect radiation in the air, on surfaces and even inside objects. This makes them extremely useful for detecting radioactive contamination or leaks from nuclear power plants, medical facilities and other sources of radioactivity. They can also be used as an educational tool to teach about the dangers of radiation exposure. Another advantage is their portability; they are small enough to fit into your pocket so you can take one with you wherever you go.


The main disadvantage of a Geiger counter is that it can be very expensive. However, there are some cheaper models available if you don’t want to spend too much money on your first one. Another major drawback with this type of radiation detector is the fact that they cannot detect alpha or beta particles and may not always give an accurate reading for gamma rays depending on how strong they are. This means you will need another device in order to get an overall picture of what kind of radioactive material has been detected by the Geiger Counter itself.

Shopping Guide: Everything you need to know

Which brands and manufacturers are represented in our review?

In our review, we present products from various manufacturers and suppliers. The list includes products from the following brands and manufacturers, among others:

  • GQ
  • GQ
  • QG

What is the price range of the featured products?

The cheapest Geiger Counter in our review costs around 70 pounds and is ideal for customers who are conscious about their money. However, those who are willing to spend more money for better quality can also spend around 159 pounds for one of the more expensive products.