6. 601 to 999 - Physical Testing, Biologics, Dietary Supplements, Industrial, PT Scheduled Studies, Topicals & Cosmetics, USP Proficiency Testing Program
USP <781> Proficiency Test for Optical Rotation
Product Details
Product Details
Qualitative Proficiency Test (PT) for laboratories performing Optical Rotation testing by USP <781> or equivalent. Participants report qualitative results for their samples. Participants are asked to indicate presence or absence for the target analyte when reporting results for each sample. Samples provided as a three sample panel. One of three samples will be positive for the target analyte. Participants are asked to identify the positive sample by Optical Rotation ID test per USP monograph.
Positive Sample: Calcium Ascorbate, powdered or granulated solid
Negative Samples: Sodium Ascorbate, powdered or granulated solid
Calcium Ascorbate 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
