Standard methods medium for growth of coliform bacteria in water and food.||Certificate of Origin:|The raw animal product used in the manufacturing of Tryptose Phosphate Broth is derived from casein originating in the USA, New Zealand and/or Australia. The animals used received both ante- and post-mortem inspections under certified veterinary care and were inspected to be free of apparent infectious and contagious diseases. During processing of the raw material, a batch is heated to a minimum of 80°C for 1 hour including a minimum of 5 minutes at 105°C. The product is then dried at a minimum of 140°C.||Appearance: Light yellow to tan, homogeneous free flowing powder||Solubility: Light yellow to yellow, clear, complete||pH: As Reported||Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.