SURE Escherichia coli|357930 |BNCC

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Escherichia coli SURE

Subculture procedure	① Prepare one test tube containing 5-10 mL of liquid culture medium and two plates; ② Open the safety cabinet, burn the top with an alcohol lamp, quickly drip sterile water to break it, and then use tweezers to crush it; ③ Transfer 0.5mL of liquid culture medium into a freeze-drying tube, dissolve it thoroughly, and then transfer it back into the liquid test tube, mixing well; ④ Transfer 0.2mL of bacterial suspension into a Agar plate, apply evenly, and repeat twice to obtain two plates; ⑤ Place all liquid test tubes and plates under the above cultivation conditions, and the bacterial strains can be used once they grow.
Growth conditions	37 ℃; 18-24h; aerobic;
Storage conditions	2-8 ℃
Safety level	1
morphology	Round, irregular edges, opaque, gray white on the front and back, raised in the middle, smooth and bright on the surface, moist texture, easy to pick up, G - (red), Bacillus, purity: pure
Sharing mode	Public welfare sharing

Escherichia coli SURE

Storage conditions : 2~8 ℃

No. : 357930

Product format :freeze dried, 200ul

Validity : 6 years

Biosafety level : 1, handle in ultra-clean table or safety cabinet

Receiving notice: if any abnormality is found on the day of receiving goods, please contact customer service within 24 hours in time. if the dry powder is overdue, it will be regarded as good receipt. Dry powder cannot be retained once used up, and can be used after 1~2 generations of activation. please refer to the attached page for the use of inclined plane and bacterial liquid. Please activate in strict accordance with this instruction, otherwise the replacement service will not be provided if the strain is abnormal and inactivated.

Growth conditions :37 ℃, aerobic, basal medium, 18-24h. Basic medium: yeast extract 5.0g, peptone 10.0g,NaCl 10.0g, distilled water 1.0L, pH 7.0. Sterilization at 121 ℃ for 15min.

Recovery steps:

(1) Prepare a test tube containing 5-10mL of liquid culture medium and 2 plates;

(2) Open the ampoule in the biosafety cabinet, heat the tip of ampoule in a flame, quickly drop sterile water to creak it, then break it with forceps;

(3) Draw 0.5mL of liquid culture medium into a freeze dried ampoule, fully rehydrate and transfer the solution to the liquid test tube, mix evenly;

(4) Inoculate a plate with 0.2mL of suspension liquid, repeat the step to obtain two plates;

(5) Put all the liquid test tubes and plates under the above culture conditions for cultivation, and the strains can be used when they grow.

Recovery record: According to the recovery instructions, the results of the recovery are reported as follows:

Item	test results
viability :	good viability, in 24 hours liquid medium become turbid,strain layer is obvious;colony is typical on the streaked plate
colony morphology (above)	Size: 1-2mm Shape: Round Edge: Irregular Transparency: Opaque Color: off-white uplift: middle convex surface: bright and smooth texture: moist and easy to stir
Conclusion	good viability, no abnormal colony morphology, qualified

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