PQ Check Standard, 0.7 µm Single-Mode Peak, Polystyrene Latex (PSL) Beads

PQ Check Standard, 0.7 µm Single-Mode Peak, Polystyrene Latex (PSL) Beads

• Designed as a PQ check standard for use in between annual calibrations for Light Scattering particle counting systems, this product can be used to verify correct particle counting instrument operation.
• Volume: 125 mL
• Standard material: NIST traceable size Polystyrene latex (PSL) spheres
• Nominal sizes and concentrations of standard particles:
  • 7 µm PSL – 375,000 particles/mL
  • Product batch will be ± 10% of the nominal concentration; individual standard bottles will be certified ± 22% of the mean concentration and particle sizes are certified ± 5% of the standard size (± uncertainty)
• NOTE: suspension may need to be diluted prior to testing to avoid coincidence counting errors; consult your instrument manufacturer’s specifications for details.

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