Count-Cal count controls provide a cost effective,
convenient way to validate liquid particle
counters. Packaged in single-use bottles and intended to be sampled directly from the bottle, Count-Cal eliminates the need for serial dilutions and extensive sample handling, thereby
minimizing contamination. It was developed for manufacturers of parenteral drugs and ophthalmic solutions seeking interim verification of USP <788> and <789> (Particulate Matter in Injections and Particulate Matter in Ophthalmic Solutions).