10A N.C. Admin. Code 42D .0251 - MICROBIOLOGY QUALITY ASSURANCE
Requirements for quality assurance are as follows:
(1) A written quality assurance (QA) plan
shall be available for review.
(2)
Records on analytical quality control tests on media and equipment shall be
prepared and retained for five years.
(3) A performance level of 75 percent shall
be maintained for each method for which a laboratory is, or wishes to be
certified. This 75 percent average shall be calculated from the 10 most recent
performance sample data points from water performance studies, double blind,
blind and on-site samples.
(4) The
laboratory shall comply with all quality control requirements in Rules .0247
and .0248 of this Section.
Notes
Eff. December 1, 1991;
Amended Eff. January 1, 1996.
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