Cleaning of the Optical Block, Critical Orifice, and Focusing Nozzle of the Brechtel Model 1710 Mixing CPC.
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Over time, the optical block and sample flow path of the Brechtel Model 1710 MCPC will need cleaning. This document shows how to do this.Symptoms of a dirty optical block and/or clogged sample flow path can include low count rates, low sample and saturator flow rates, and oscillating flow rates. The oscillating flow rates are typically observed with an external flow monitoring or calibration device such as a BIOS or Gilibrator flow calibrator.