Ammonium Chloride Fine Crystals AR 500g Ammonium Chloride Fine Crystals AR (Analytical Reagent grade) are high-purity crystals used in labs for chemical reactions, creating buffer solutions, cooling baths (endothermic dissolution), cell lysis (red blood cells), and quenching reactions, plus industrial uses in soldering flux, fertilizers, textiles, and batteries, but the AR grade is not for food or medicine, unlike food-grade…