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USP <791> pH Proficiency Test


Proficiency Test for laboratories performing pH testing, potential hydrogen ions, of pharmaceutical material by USP <791>. read more



Catalog Number:
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PH-0523, PH-0123, PH-0922

Product Details

Product Details

Quantitative Proficiency Test (PT) for laboratories performing potential hydrogen ions, pH, testing by USP <791> or equivalent. Participants report quantitative results for their sample(s). Samples provided two vials containing 6g of material.  Participants are asked to determine the pH of the sample per the USP monograph or equivalent.

Target Analyte: Corn Starch, powder solid

USP PT Schedule

USP PT Schedule

Study Number Study Open Date Study Close Date
PH-0422 4/18/2022


Extended from 6/9/22

PH-0922 9/19/2022 11/18/2022
PH-0123 1/16/2023 3/17/2023
PH-0523 5/15/2023 6/14/2023