Fresh milk/physical and chemical testing

When a dairy factory purchases fresh milk, it is tested according to the "Fresh Milk Purchase Standard" GB56914-1986, which includes the following aspects:

1. Sensory evaluation: including the taste, cleanliness, color, etc. of milk&Nbsp; 1. When using a milk tanker to collect milk for taste and odor, the tanker driver collects milk samples on the farm for inspection at the dairy factory. When collecting milk in the milk bucket, sampling is carried out at the receiving point of the milk bucket. If there is a difference in taste and odor compared to normal milk, the quality evaluation is lower, which will affect the income of dairy farmers. If there is a significant difference in taste and odor, the dairy factory should reject it

2. Cleanliness inspection: The inner surfaces of milk cans and milk barrels should be carefully inspected. Any residue of milk is evidence of insufficient cleaning, and the price of milk should be reduced according to the quality payment plan

3. The color of milk should be white or slightly yellow, and there should be no red, green, or significant yellow

Normal fresh milk should be milky white or slightly yellow, and should not contain foreign objects visible to the naked eye. There should be no red, green or other abnormal colors, and there should be no bitterness, astringency, saltiness or taste, as well as odors such as feed, silage, mold, etc.;

; It is a liquid with good fluidity and should not be in a viscous state

  2、 Physical and chemical indicators: including fat content, protein content, freezing point, alcohol test, acidity, temperature, relative density, pH, antibiotic residue, etc

There are various methods for measuring fat content, and the Gerber method is widely used for measuring the fat content of whole milk

2. Protein content: Many dairy factories pay milk farmers based on the protein content in their milk. This analysis method is performed using an infrared analyzer, which can analyze 300 samples per hour

3. Freezing point: Many dairy factories detect whether milk is mixed with water by measuring the freezing point. The normal composition of milk has a freezing point of -0.54~-0.59 ℃, and if mixed with water, the freezing point will rise. Special instruments are used to measure the freezing point

4. Impurity detection: This method is only used for the collection of milk in the milk bucket. Use a pipette to take the sample from the bottom of the milk bucket, and then filter it with filter paper. If visible impurities are left on the filter paper, the milk price should be reduced

Alcohol test is a widely used method to observe the heat resistance of fresh milk&Nbsp

MilkoScan TM FT2 can measure fat, protein, lactose, total solids, non fat milk solids, freezing point, total acidity, free fatty acids, density, urea, casein

3. Microbial indicators: mainly refer to the total number of bacteria. Other factors include the number of somatic cells, spores, heat-resistant spores, and psychrophilic bacteria. If necessary, the blade azure test can also be used to evaluate the freshness of milk. The main methods for bacterial examination include: methylene blue reduction test (Azuron test), total bacterial count determination, direct microscopy, etc

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

BAIJIAN testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Our Competitive Edge:

1. The testing industry is fully covered, meeting different testing needs

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3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China