The tolerance for arsenic in processed pet food is established at 1/20 (0.05) grain per pound and for lead at 1/60 (0.0167) grain per pound.
Cal. Code Regs. Tit. 17, § 19040
Note: Authority cited: Sections 208 and 27040(c), Health and Safety Code. Reference: Sections 27030 and 27040(c), Health and Safety Code.