Welcome to Ion Science

We are the largest manufacturer of photoionisation detection (PID) sensors with our technology trusted by major gas detection manufacturers around the globe.  As well as sensors, we manufacture a range of leading handheld, personal and fixed PID detection instruments for the fast, accurate detection of volatile organic compounds (VOCs). Additional to our PID range are our gas leak detectors, SF6 leak detectors, and portable mercury detectors.

Our PID technology has a dynamic detection range of ppb to 20,000 ppm and exceptional resistance to humidity and contamination for the most accurate, reliable results you can trust within the most challenging environments.

Over 25 years industry experience

With over 25 years designing and developing sensors and instrumentation for the gas detection industry, we provide you with a vast array of knowledge and expertise.

Exceptional service & support

Renowned in the industry for our exceptional level of customer service and support, our friendly team are on hand to help you and guarantee a fast response to your enquiry.

Where to find us

Our UK office and manufacturing plant is based just outside of Cambridge, and we have additional offices in Germany, Italy and the USA, along with a global network of Distributors.

About us

Visit our About us pages and watch our video to find out more!

Ion Science’s Tiger has impressed me with it’s reliability in humid environments. It’s a nice sized instrument, easy to use and is an easy piece of equipment to calibrate. It is an extremely good product, and the correspondence between Ion Science and myself has been prompt and precise.

Jeremy Kinman, Hydrogeologist - Artbury Environmental Engineering

Cub is just the product we have been waiting for. It’s a low cost personal and reliable PID monitor which is just what we need to assess workers exposure out on the field to monitor occupational exposure in the chemical industry. The quality of the product is excellent, along with it’s simplicity, accuracy, stability, easy of use, and it’s extremely lightweight. We dealt with Ion Science’s Swiss distributor, Lauper Instruments, who were a pleasure to deal with. Brilliant customer care all round, we feel we can really rely on them.

Vincent Perret, CIH CEO - TOXpro SA

We recently purchased a GasCheck G directly from Ion Science. The overall service received from Ion Science has been excellent; we needed an instrument fast and they delivered. The GasCheck G is being used for helium leak detection, and with it’s ease of use and the construction of the instrument, it’s exactly what we needed to use on our site.

Derek Martin, Materials Manager - Stanre International Limited

How can we help you?

Visit our pages to find the most suitable PID sensor or gas detection instrument to meet your industry and application.

View our Product Range Search by Industry

PID Sensors

Renowned for its exceptional humidity resistant operation and anti-contamination design, our PID sensor technology is proven to be the best performing on the market, trusted by gas detection manufacturers around the globe.


Choose from our range of handheld, personal and fixed gas detectors for the fast, accurate detection of gas leaks, volatile organic compounds (VOCs), mercury vapours, and SF6 gas.


We provide a number of accessories to enhance your Ion Science instrument and give you the flexibility you need on site. Visit our accessories pages to see our full range.


Whether you need multiple fixed benzene-specific detectors across your petrochemical plant, or a handheld VOC detector for soil headspace analysis, we have a number of instruments to suit your industry and application.

Case Studies

See how our instruments are helping customers around the globe.

View case studies