Washington Code > Chapter 19.94 > § 19.94.410 Washington Code 19.94.410 – Butter, margarine to be sold by weight Current as of: 2023 | Check for updates | Other versions Butter, oleomargarine, and margarine offered for sale must be sold by weight. [ 2019 c 96 § 13; 1995 c 355 § 19; 1988 c 63 § 1; 1969 c 67 § 41.] NOTES: Effective date—2019 c 96: See note following RCW 19.94.160. Application—Effective dates—1995 c 355: See notes following RCW 19.94.015. Previous sectionNext section Chapter 19.94 Contents