USP Proficiency Testing Program, USP PT Schemes
USP <921> Water Determination Proficiency Test for Solid Materials
Product Details
Product Details
Quantitative Proficiency Test (PT) for laboratories performing Water Determination testing by USP <921> or equivalent. Participants report quantitative results for their solid sample(s). Samples provided two vials containing 5g of material. Participants are asked to determine the percent (%) water in a solid pharmaceutical product sample per the USP monograph or equivalent.
Sample Material: Lactose Anhydrous (powder)
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
