PRIORITY MAIL SHIPPING (2-3 Days)!!. You are purchasing 1 lb. of 99.5+% Ammonium Chloride (label says 99+%). YOUR SAMPLE will be re-bottled from a 100 lb. drum. This is not the pre-treated material that contains free-flowing agents. It is very pure with a minimum purity of 99.5%. By purchasing this item the buyer agrees that they understand the uses and potential hazards with this material. For Lab or R & D use only. NOT for food or drug use. Picture may not reflect new GHS labeling.