1.25 kg packaging Inside: Double sterile bag Outside: Cardboard bucket Inner packing size: 60cm*100cm double sterile bag Outer packing size: 35cm*35cm*51cm cardboard drum 2. 1to 5 kg packaging Inside: Ziplock bag Outside: Aluminum foil bag 3.Storage Store in a cool, dry and dark place. Shelf life is 24 months. Best Price 3-hydroxybutyric Acid Cas 625-72-9 Bhb Powder D-beta-hydroxybutyric Acid