Presence Absence Broth

Product introduction For coliform counts in water. preparation method 91. 5 grams of this product was weighed and dissolved in 1000ml distilled water with heating and stirring to make three times the concentration of present hidden broth, which was divided into aliquots and autoclaved at 121 ° C for 12 minutes before use. composition: g/L Beef dip powder: 3. 0 peptone: 5. 0 Lactose: 7. 46 peptone: 9. 83 Dipotassium hydrogen phosphate: 1. 35 Potassium dihydrogen phosphate: 1. 35 Sodium chloride: 2. 46 Sodium lauryl sulfate: 0. 05 Bromocresol violet: 0. 0085 pH: 6. 8±0. 2, 25℃ Note: Product information may be optimized and upgraded. Please refer to the actual label information for accuracy.