3. 181 to 203 - Identification, Animal Feed, Dietary Supplements, Food & Perishables, Industrial, PT Scheduled Studies, Shop by General Chapter, Shop by Industry, Topicals & Cosmetics, USP Proficiency Testing Program
USP <281> Residue on Ignition Proficiency Test
U.S. Pharmacopeia USP PT Program Schedule
| 2023 PH | ||
| Study Number | Study Opens | Study Closes |
| PH-0123 | Jan. 16, 2023 | March 17, 2023 |
| PH-0523 | May 15, 2023 | July 14, 2023 |
| PH-0923 | September 15, 2023 | November 17, 2023 |
| PH-0124 | January 15, 2024 | March 17, 2024 |
MSDS/SDS
Product Details
Quantitative Proficiency Test (PT) for laboratories performing Residue on Ignition Assay by USP <281> or equivalent. Participants report quantitative results for their sample(s). Samples provided two vials containing 2g of material. Participants are asked to determine the percentage (%) of Residue on Ignition (Assay) of target analyte in the sample per the USP monograph or equivalent.
Target Analyte: Corn Starch, powder solid
