6. 601 to 999 - Physical Testing, Animal Feed, Dietary Supplements, Food & Perishables, Hemp & Cannabis, Industrial, PT Scheduled Studies, Shop by Industry, Topicals & Cosmetics, USP Proficiency Testing Program, USP PT Schemes
USP <621> Chromatography GC-FID Proficiency Test
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 |
MSDS/SDS
