Positive quality control sample of total coliform bacteria in water quality (paper rapid method)|360409 |BNCC

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Water quality total coliform positive quality control samples (Paper Rapid Method)

Culture medium	BNCC352239
Description	Nutrient Agar
Composition	Peptone:10.0g, Beef Extract Powder:3.0g, NaCl:5.0g, Agar:15.0g, pH:7.3±0.1(25℃)
Growth conditions	Cultivation temperature 37 ℃; Cultivation time 24-48 hours; Aerobic gas environment
Subculture procedure	The sample needs to be dissolved in a total of 6 mL of sterile water or sterile physiological saline. Before use, place the quality control sample at room temperature for 30 minutes, then open it in a biosafety cabinet and immediately add 6 mL of sterile water. After dissolution, shake the penicillin bottle and shake it evenly to obtain a positive quality control sample, totaling 6 mL with a concentration of 300-3000 CFU/mL. The sample needs to be dissolved in a total of 6 mL of sterile water or sterile physiological saline. Before use, place the quality control sample at room temperature for 30 minutes, then open it in a biosafety cabinet and immediately add 6 mL of sterile water. Dissolve it and shake the penicillin bottle evenly to obtain a positive quality control sample, totaling 6 mL with a concentration of 300-3000 CFU/mL. After receiving the goods, please be sure to keep them properly. If there is any damage or other situation, please contact our center within 24 hours after receiving them.
Storage conditions	-20 ℃, stored in the dark
Sharing mode	Public welfare sharing