PQ Check Standard, Tri-Mix Verification Standard for USP <789> Applications

PQ Check Standard, Tri-Mix Verification Standard for USP <789> Applications

• Designed specifically as a tri-modal PQ check standard for automated Light Obscuration particle counting systems being used for USP <789> ophthalmic product particulate testing applications.
• Volume: 250 mL
• HDPE Bottle w/PP Cap
• Standard material: NIST traceable size Polystyrene latex (PSL) spheres
• Nominal sizes and concentrations of standard particles:
  • 10 µm PSL – 1,000 particles/mL
  • 25 µm PSL – 500 particles/mL
  • 50 µm PSL – 100 particles/mL
  • Product batch will be ± 10% of the nominal concentration; individual standard bottles will be certified ± 15% of the mean concentration and particle sizes are certified ± 5% of the standard size (± uncertainty)

The Certificate of Conformance includes actual concentration testing data and mean size