general steps of food inspection, sample collection and sample processing

record and processing of analysis results. If the sensory inspection of the samples submitted for inspection has failed to meet the food hygiene standards or has deteriorated, it is unnecessary to conduct physical and chemical inspection. Sample collection, also known as sampling and sample preparation, refers to the sampling of representative samples for analysis and testing. Sample collection generally includes three contents: sampling, sampling and sample preparation. When sampling, we must pay attention to the production date, batch number, representativeness and uniformity of the sample. The sampling quantity should meet the needs of the inspection items. The sampling container should be made of hard glass bottles or polyethylene products according to the inspection items.

The general sampling steps are as follows: ① Collection of original samples; (2) mixing of original samples; ③ Shrink the original sample to the required amount. Different methods should be used to collect samples for different samples.

liquid sample collection: for large-scale barreled and canned samples, siphon method can be used to suck 1.5L of upper, middle and lower samples respectively, and 1.5~1.1L can be taken after mixing.

for the samples packed in a large tank, 1.5L can be sampled at the four corners and the upper, middle and lower layers in the center of the tank respectively, and 1.5~1.1L can be obtained after fully mixing. Collection of solid samples: the original samples of samples in all parts should be fully uniform to make the samples uniform and representative.

for large samples, they should be cut into small pieces or crushed, sieved and crushed. When sieving, there should be no loss or splash of materials, and all of them should be sieved. Then, after the original samples are fully mixed, they should be divided into four parts until the required sample amount is 1.5~1.1kg.

The above information about food inspection is compiled by Baijian Cosmetics Testing Platform. I hope it can help you and hope to adopt it.