The World’s First Galvanic Lead-Free Oxygen Sensor

See O2-A2-GLF Oxygen Sensor Contact Us

Introducing New Advanced PID Sensors

View Alphasense PIDX Sensors Contact Us

Industry-Leading Air Quality Sensors

View Air Quality Sensors Contact Us

High-Quality Sensors for Gas Safety

View Gas Safety Sensors Contact Us

Best-in-Class Particle Counting Solutions

See Optical Particle Counters Contact Us

The World’s First Galvanic Lead-Free Oxygen Sensor

See O2-A2-GLF Oxygen Sensor Contact Us

Introducing New Advanced PID Sensors

View Alphasense PIDX Sensors Contact Us

Industry-Leading Air Quality Sensors

View Air Quality Sensors Contact Us

High-Quality Sensors for Gas Safety

View Gas Safety Sensors Contact Us

Best-in-Class Particle Counting Solutions

See Optical Particle Counters Contact Us

With over 25 years’ experience in the design and manufacture of gas and particulate sensors, Alphasense is known globally as an innovative and reliable provider of a wide range of gas sensor technologies.

At Alphasense, we supply high-quality Oxygen, CO2, toxic and flammable gas sensors to many of the world’s leading industrial OEMs.

If you manufacture portable or fixed industrial gas detection monitors, stack gas analysers or environmental monitoring instruments, we have the solution for your needs.

Why Alphasense?

  • performance High performance
  • warranty Low warranty returns
  • 25 25 years' experience

O2‑A2‑GLF Lead‑Free Oxygen Sensor

A lead‑free, zero‑bias oxygen sensor built on Alphasense’s proven leak‑free platform for a true drop‑in replacement—no redesign required. RoHS‑compliant, stable, and built for demanding safety environments.

100% Leak‑Free Oxygen Sensors

Built on Alphasense’s proven patent-pending leak‑free platform, these O2 sensors eliminate electrolyte leaks that damage instruments and shorten product life.

PIDx Sensors for VOC Detection

Next‑generation PID technology delivering enhanced stability, repeatability, and accurate ppb‑level VOC detection. Designed for demanding air‑quality and safety applications where reliability matters.

Best-selling Alphasense products