AirPhoton - Model CR100 -Clean Air Reference System

The CR100 clean air reference system is designed to compensate for potential calibration drift of the IN101 or IN102 nephelometer. The CR100 pumps ambient air through a high quality HEPA filter that removes aerosol particles from the air to a level that the clean air can be used as a Rayleigh scattering reference for the nephelometer. It can be used as a semi-permanent attachment to the body of the nephelometer or as a portable bench top reference system. The figure at left shows the CR100 system mounted on the body of a IN101 nephelometer.