What are the national standards for moisture determination the more the better .

What is the national standard for moisture determination?

What are the national standards for moisture determination?

1. GB National Standard for Food Hygiene and Safety Determination of Moisture in Food

2. GB T 12087-2008 "Tapioca Starch Moisture Determination Drying Box Method".

3. GB T Solid Instant Tea Part 3: Moisture Determination

4. GB T 21305-2007 "Basic Law on the Determination of Moisture in Cereals and Cereal Products".

5. GB T 5497-1985 "Grain Crops, Fuel Detection Moisture Determination Method".

6. GB T 8304-2013 "Tea Moisture Determination".

7. Determination of moisture composition of GB T seasonings and condiments (distillation method).

8. Determination of moisture composition of GB T meat and meat products

9. GB T 8858-1988 "Determination of Dry Matter and Water Composition in Fresh Fruits, Vegetables and Fruits".

10. SN T 0919-2000 "Determination of Moisture in Import and Export Tea".

National standard, commonly known as national standard, refers to a standard that is approved and published by the national standardization authority, has positive significance for the national economic and technical development trend, and is unified in the domestic scope. The national standard is a unified technical standard within the scope of all parts of the country, which is formulated by the standardization administrative department of the General Office of the People's Republic of China, harmonious project division of labor, formulated by the institution (including revision), unified review, serial number, and publication.

Where laws and regulations have other provisions on the formulation of national standards, they are to be implemented in accordance with the requirements of laws and regulations. The term of the national standard is generally 5 years, and after the time limit, the national standard needs to be revised or formulated. In addition, with the development trend of the times, the country must establish new standards to meet the needs of our production and daily life.

As a result, standards are dynamic information content.

Legal analysis: The national standards for moisture determination are as follows: 1. Polarization voltage output: 0 to 2550mV; 2. Polarization step size: 10mV; 3. Polarization output error:

Legal basis: Article 2 of the Standardization Law of the People's Republic of China The standards (including standard samples) mentioned in this law refer to the technical requirements of technical groups in the fields of agriculture, industry, service industry and social undertakings.

Standards include national standards, industry standards, local standards, group standards, and enterprise standards. National standards are divided into mandatory standards and recommended standards, and industry standards and local standards are push or recommend standards. Mandatory standards must be enforced.

The State encourages the adoption of recommended standards.

The national standards for moisture dating are as follows: 1. Polarization voltage output: 0 to 2550mV; 2. Polarization step size:

10mv；3. Polarization output error: plus or minus 3%; 4. Maximum output current of polarization voltage: 5mA; 5. The most mileage:

0 to 200 A; 6. Resolution: 7. The effective accuracy is better than: plus or minus; 8. Minimum feeding:

30 seconds to a few minutes; 12. Method storage capacity: 100 peripheral interfaces for titration results.

Article 2 of the Standardization Law of the People's Republic of China The standards (including standard samples) mentioned in this law refer to the technical requirements that need to be unified in the fields of agriculture, industry, service industry and social undertakings.

Standards include national standards, industry standards, local standards, group standards, and enterprise standards. National standards are divided into mandatory standards and recommended standards, and industry standards and local standards are recommended standards. Mandatory standards must be enforced. The State encourages the adoption of recommended standards.

Summary. 1. The standard system is more simplified.

The integration of the old standards with the same detection principles and testing steps makes the moisture detection method more systematic and scientific. For example, GB T8304-2013 and GB T5497-1985 are equivalent to the new standard law, GB T8858-1988 is equivalent to the second method of the new standard, and GB is equivalent to the third method of the new standard. The combing and integration of standards make it more convenient and unified for inspectors and quality inspectors of food enterprises to choose standards.

2. Higher detection efficiency.

The new standard will be relatively unified in the moisture testing methods of all kinds of food, which is conducive to batch testing by inspectors. For example, many of the older standards used the direct drying method to determine moisture, but the detection conditions differed from method to method. GB T12087-2008 requires 130 heating to constant weight; GB requires 103 2 heating for 1h; GB T21305-2007 requires 130 3 heating to the difference between the two times before and after heating.

Differences in standards make inspectors inefficient when testing multiple types of food.

What are the main changes in the 2017 version of the total moisture determination standard compared to the 2007 version of the standard.

1. The standard system is more simplified, and the old standards with the same detection principle and testing steps are integrated to make the moisture detection method more systematic and scientific. For example, GB T8304-2013 and GB T5497-1985 are equivalent to the new standard law, GB T8858-1988 is equivalent to the second method of the new standard, and GB is equivalent to the third method of the new standard. The combing and integration of standards make it more convenient and unified for inspectors and quality inspectors of food enterprises to choose standards.

2. The new standard of higher detection efficiency unifies the moisture detection methods of various types of food, which is conducive to batch testing by inspectors. For example, many of the older standards used the direct drying method to determine moisture, but the detection conditions differed from method to method. GB T12087-2008 requires 130 heating to constant weight; GB requires 103 Kaishen 2 heat for 1h; GB T21305-2007 requires 130 3 heating to the difference between the two times before and after heating.

Differences in standards make inspectors inefficient when testing multiple types of food.

3. The coarse test results are more accurate, and the old standards, such as GB T12087-2008, GB and other Yanxian, use the direct drying method to detect moisture, lack of constant staring and heavy process, which has a certain impact on the accuracy of the test results.

Hello dear, glad to answer for you, reply as follows......1. Sample selection: The 2017 version of the total moisture determination standard has stricter requirements for the selection of sample Jianling products, and clear requirements have been made in the batch, quantity, production date, process and other control of samples; 2. Experimental instruments: The 2017 version of the total moisture determination standard has stricter requirements for instruments and equipment, such as explosion-proof universal calorimeters, which must be matched with corresponding pulse sensors and diffusion plates.

3. Measurement method: In the 2007 version of the total moisture determination standard, only the gravimetric method, weight reduction method and chloroform method were proposed, but in the 2017 version of the total moisture determination standard, in addition to the gravimetric method, weight reduction method and chloroform method, new measurement methods such as laser absorption method and differential scanning calorimetry method were also added; 4. Measurement process: The 2007 version of the total moisture determination standard only briefly explains the measurement process, while the 2017 version of the standard gives a specific detailed description of the ambient temperature, relative humidity, measurement rhythm, etc., and achieves the standardized operation of blocking and erection.