Zinc Gluconate Powder by BulkSupplements.com is one of the selections of our dietary supplements. This mineral supplement provide daily zinc intake in your diet. Each serving of this zinc supplement contains 285mg of Zinc Gluconate (with 40mg of Zinc) and needs an accurate milligram scale to measure. Contents of this product is sold by weight, not volume and settling may occur. And, we also sell it different sizes ranging from 100g to 5kg in resealable bags. Our Zinc Gluconate powder, or Zinc powder, is pure, clean, and does not contain any filler, additives and artificial flavors. And Zinc 40mg, or Pure Zinc Supplements, is dairy free, soy free, gluten free, yeast free, no added sugar. All products by BulkSupplements.com are manufactured according to cGMP Standards to ensure the highest quality for manufacturing, packaging, labeling, and holding operations. We work with a third-party laboratory that test our products at multiple stages during production, from raw material to finished products, and ensures compliance, standards, and consistency.