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USP <621> Chromatography HPLC Proficiency Test for Solid Materials


Proficiency Test for laboratories performing testing of solid pharmaceutical material using High Pressure Liquid Chromatography, HPLC, in accordance with USP 621. read more



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

Product Details

Product Details

Qualitative and Quantitative Proficiency Test (PT) for laboratories performing HPLC Assay of solid materials by USP <621> or equivalent. Participants may report qualitative and/or quantitative results for their powder sample(s). Samples provided as a three sample panel. One of three samples will be positive for target analyte. Participants are asked to identify the positive sample by HPLC peak retention time match (ID Test). Determine the concentration (Assay) in percentage (%) of target analyte in the solid sample per the USP monograph or equivalent.


Positive Sample: Maltitol, powdered or granulated solid

Negative Samples: Sorbitol, powdered or granulated solid

Maltitol Reference Material Standard will be provided with the Proficiency Test Samples

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