Wash. Rev. Code § 69.50.603 : FOOD, DRUGS, COSMETICS, AND POISONS — UNIFORM CONTROLLED SUBSTANCES ACT — MISCELLANEOUS — Uniformity of interpretation TEXT PDF This chapter shall be so applied and construed as to effectuate its general purpose to make uniform the law with respect to the subject of this chapter among those states which enact it. RCW 69.50.603 1971 ex.s. c 308 § 69.50.603.