PQ Check Standard, USP <788> Microscopic Method Membrane Qualification Std.

PQ Check Standard, USP <788> Microscopic Method Membrane Qualification Standard

• 25 mm, 0.8 µm pore size MCE membrane, grey, gridded or non-gridded
• Standard material: NIST traceable size Polystyrene latex (PSL) spheres
• Nominal sizes and concentrations of standard particles:
  • 10 µm PSL – 300 particles per membrane
  • 25 µm PSL – 30 particles per membrane
• Above concentrations are nominal; the Certificate of Analysis included with each membrane will show MML certified concentrations