Letheen Broth Base, Media Type Letheen Broth Base, Size 500 mL, Product Form Powder, Container Type Bottle, Shelf Life 2 yr, Reference Methods AOAC, Standards AOAC, ASTM, FDA, Application Testing of Quaternary Ammonium Compounds for Antimicrobial Activity, Maximum Storage Temperature - Centigrade 30 Degrees C, Minimum Storage Temperature - Centigrade 2 Degrees C.