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USP <621> Chromatography GC-FID Proficiency Test


Proficiency Test for laboratories performing Assay by USP <621> GC-FID Chromatography with corresponding identification by retention time match. 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 GC-FID Chromatography Assay by USP <621> or equivalent. Participants may report qualitative and/or quantitative results for their 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 peak retention time match (ID Test). Determine the concentration (Assay) in percentage (%) of target analyte in the sample per the USP monograph or equivalent.


Positive Sample: Isopropyl alcohol

Negative Samples: Isobutanol

2-Propanol 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 07/15/2022*

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