Lead (as Pb), not more than 10 parts per million.
Arsenic (as As), not more than 5 parts per million.
Mercury (as Hg), not more than 1 part per million.
Silver (as Ag), not less than 99.9 percent.
21 C.F.R. §73.2500
Lead (as Pb), not more than 10 parts per million.
Arsenic (as As), not more than 5 parts per million.
Mercury (as Hg), not more than 1 part per million.
Silver (as Ag), not less than 99.9 percent.
21 C.F.R. §73.2500