FAQs Single template

Real-time optical particulate instruments infer mass concentration from particle measurements and assumptions about the sampled material. The AIR XS manual states that mass concentration data from optical sensors should be treated as an indicator and may vary with particle type, test condition, and local environment.

The value is useful for showing changes in airborne particulate levels over time, but it should not be treated as a direct substitute for every regulatory or laboratory method unless the relevant manual and local compliance process allow it.