Water quality Fecal coliform standard quality control sample (multi-tube fermentation method)|BNCC360422 |BNCC

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Water quality fecal coliform standard quality control material sample (multi-tube fermentation method)

Culture medium	Peptone: 10.0, beef powder: 3.0, sodium chloride: 5.0, agar: 15.0,pH: 7.3±0.1(25 ℃)
Subculture procedure	Samples required a total of 100mL of sterile water or sterile saline to dissolve. Before use, place the quality control sample at room temperature for 30min, then open it in the biosafety cabinet, immediately add 3~4mL of sterile water, suck it out after dissolution, and put it into a sterile bottle. The remaining sterile water is repeatedly washed with the inner wall of the vial, and all of it is transferred to the above sterile bottle, which is the standard quality control sample, totaling 100mL, with a concentration of 300 ~ 8000MPN/L.
Growth conditions	Culture temperature 37 ℃; Culture time 18-24 hours; Aerobic gas environment
Storage conditions	-20 ℃, protected from light
Safety level	1
application	Water quality Fecal coliform determination Quality control and personnel assessment (multi-tube fermentation method). Applicable standard: "HJ 347.2-2018 water quality determination of fecal coliform multi-tube fermentation method"
Sharing mode	Public welfare sharing