Stand-alone photometers are used for custom made test chambers, e.g. in respirator certification testing, and for custom filter testing equipment. Light scatter photometers are the preferred choice for detectors in respiratory testing due to their very high dynamic range and sensitivity. With the need for respiratory masks with higher protection factors as well as the measurement equipment improved, Laser Photometer Model 8587A is the result of such continued improvement of the measurement capabilities.
The model 8587A laser photometer uses a photometer engine similar to that used in the Automated Filter Tester model 8130A. It uses a 30 mW laser to illuminate and collect the scattered light from airborne particles. An internal valve allows switching between upstream and downstream sampling.
