Range: 0.01 - 10 ppm

This monitor is ideal for keeping about your person to ensure ozone is within safety limits.

Rated for continuous usage with ozone levels up to 1 ppm, and will withstand occasional exposure up to 10 ppm.
 

Range: 0.01 - 20 ppm

The A22 is our most versatile ozone monitor.  This genius monitor can read ozone levels from 0.01 to 20 pmm with a stunning 10%+- accuracy.

Packed full of extra features, the A22 is our handheld monitor of choice.
 

Range: 0.01 - 0.14 ppm

This monitor is ideal for keeping about your person to ensure ozone is within safety limits.

Suitable for levels up to 0.14 ppm