1) Before sampling, confirm whether the goods and certificates are consistent.
2) In the process of sample collection in microbiology, adverse factors such as water and other environmental factors should be avoided to prevent the sample from being polluted.
3) Sampling appliances (such as syringes, blood vessels, test tubes, probes, shovels, spoons, samplers, scissors, sample bags, etc.) must be sterilized.
4) For sample collection in microbiology, the samples collected generally require random sampling. If it is suspected that the samples are most likely to be contaminated by pathogens or contain pathogens, selective sampling can be carried out.
5) Depending on the type of sample (e.g. box, bag, bottle and can), a completely sealed sample should be taken. If the sample is large, aseptic sampler shall be used; if the sample is powder, it shall be mixed while taking; if the sample is liquid, it can be evenly mixed by shaking; if the sample is frozen, it shall be kept frozen (it can be stored in ice, cold box of refrigerator or low-temperature refrigerator); if it is frozen animal product, it shall be kept at 0 ℃ ~ 5 ℃.
6) Before or after sampling, the container or bag containing the sample shall be labeled immediately, and each sample must be marked and removed (including product name, source, quantity, sampling place, sampler and sampling date).
7) Obtain information about sampling products, such as sample name, batch size, packaging type, packaging container volume, production line, product number or control number, batch number, label content, packaging damage status, product storage location or basic information of buildings, etc.
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