Section 18.74.050 - Testing laboratories(a) Testing of cigarettes under this chapter shall be performed by a laboratory that has been accredited under standard ISO/IEC 17025 of the International Organization for Standardization or by another comparable accreditation standard required by the state fire marshal.(b) A laboratory that conducts cigarette testing under this chapter shall implement a quality control and quality assurance program that ensures the repeatability of the testing results. The repeatability value may not be greater than 0.19. In this subsection, (1) "quality control and quality assurance program" means the laboratory procedures implemented to ensure that operator bias, systematic and nonsystematic methodological errors, and equipment-related problems do not affect the results of the testing quality control program;(2) "repeatability" means the range of values within which the repeat results of cigarette test trials from a single laboratory will fall 95 percent of the time.