PQ Check Standard, 5 & 10 µm Bi-Mix, USP <729 > Method 2 with Automatic Dilution

Cat No.

061UF-0125

061UF-0250

061UF-0500

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Country of origin: USA

Designed specifically with USP <729> requirements in mind, prior to executing the “”Method 2″” SPOS PFAT-5 test, this standard is used to verify the performance of a Single Particle Optical Sensing (SPOS) particle counter equipped with an automatic dilution system.

Standard material: NIST traceable size Polystyrene latex (PSL) spheres.

Nominal sizes and concentrations of standard particles:

• 5 µm PSL – 400,000 particles/mL
• 10 µm PSL – 200,000 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)

The Certificate of Analysis includes actual concentration testing data and mean size.