Criteria for maintaining accreditation.

CFR · 2024-01-01 · US · Title 9

(a) (b) (1) Maintain laboratory quality control records for the most recent three years that samples have been analyzed. (2) Maintain complete records of the receipt, analysis, and disposition of samples for the most recent three years that samples have been analyzed. (3) Maintain in a secure electronic format or in a standards book, all records, readings, and calculations for prepared standards. Entries are to be dated and the analyst identified at the time of the entry, and manual calculations verified and documented by the supervisor, or by the supervisor's designee, before use of the standard. The standards records are to be retained for three years after the last recorded entry. The certificates of analysis are to be kept on file for purchased standards for at least the period of time that the materials are in use. (4) Maintain records of instrument maintenance and calibration. The records are to be retained for three years after the last recorded entry. (5) As provided in paragraph (e) of this section, records are to be made available for review by any duly authorized representative of the Secretary of Agriculture, including ALP personnel or their designees. (c) (2) Results must be those of the accredited laboratory. Analyses of proficiency testing samples must not be contracted out by the accredited laboratory. (d) (e) (f) (g) (h) (i) (1) The laboratory must successfully analyze a set of initial accreditation proficiency testing samples for the analyte(s) that triggere

official document · source cfr-2024 · id 9:§ 439.20