COUNT-CAL™ count precision size standards, are easy to use product for validating liquid particle counters.

• Cost-effective, convenient
• World class particle technology solutions
• Polystyrene microspheres are suspended in an ultra clean diluent
• Concentration is optimized for use in light obscuration particle counters and other low concentration counting applications

Minimize contamination by eliminating the need for serial dilutions and extensive sample handling

These standards are designed for regular use in liquid particle counters to verify instrument calibration before each use, assuring the reproducibility of the particle counter by permitting a continuous record of its performance using a NIST™ traceable microsphere suspension with a precise concentration.

CC10 and CC25 are ideal for USP 788 and 788 interim testing.