"Control" means a sample or solution of a predetermined concentration, similar to the sample, which is tested for quality control purposes and not used in the calibration of a method.
N.H. Admin. Code § Saf-C 6401.11
#8454, INTERIM , eff 11-1-05, EXPIRED: 4-30-06 (See Revision Note at chapter heading for Saf-C 6400)
New. #8620, eff 5-1-06; ss by #9684, eff 3-23-10 (from Saf-C 6401.12 )