500 grams of high purity Calcium Chloride, dihydrate. This IS NOT the lower purity material labeled food grade (typically 95-98% pure at best). This is also NOT a lower purity Chinese or Korean product. It is listed as 99-103% pure, and is Reagent grade. The assay on the C of A is 101%. YOUR SAMPLE will come from a 50 kg cannister. Buyer must be 21 years of age. Buyer assumes all liability for the use of this item. Buyer agrees to not hold the seller or Amazon liable for the use of this item. Buyer agrees to use this item in accordance with all local, state, and federal laws. This is for laboratory and scientific use only! NOT for food or drug use! Shipping will comply with all USPS regulations. Item is NOT regulated by the DOT. Picture may not reflect new GHS labeling.