This article discusses the American Society for Testing and Materials (ASTM) standard D4236: Standard Practice for Labeling Art Materials for Chronic Health Hazards (see 21-1308). Discussed are how standards are written in ASTM, the general history of the new standards on artists' materials, the specific background on the new health hazards standard, and what this standard accomplishes for health protection of artists. See also AATA 18-983. -- AATA