Zinc Sulfate Monohydrate, USP, Powder. Net Wt: 55 lb / 25 kg. Jost Chemical 8150 Lackland, St. Louis, MO 63114. Caution: For Manufacturing, Processing, or Repacking.
Zinc Sulfate Monohydrate, USP may contain elevated levels of lead.
Canada, Chile, Indonesia, Israel, United States (AZ, CA, IA, UT)
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=F-1297-2023