Food additive: Zinc sulfate testing

1. Scope: This standard is applicable to the preparation of food additive zinc sulfate using sulfuric acid and zinc oxide (or zinc hydroxide) as raw materials, or the food additive zinc sulfate obtained by leaching and refining sphalerite with sulfuric acid after roasting

2 Normative References The documents referenced in this standard are essential for the application of this standard. For dated references, only the version with the date indicated applies to this standard. For undated references, the latest version (including all amendments) applies to this standard

3 Molecular formula and relative molecular weight 3.1 Molecular formula Zinc sulfate monohydrate: ZnSO4 · H2O Zinc sulfate heptahydrate: ZnSO4 · 7H2O3. 2 Relative molecular weight Zinc sulfate monohydrate relative molecular weight: 179.49 (according to the 2007 international relative atomic weight) Zinc sulfate heptahydrate relative molecular weight: 287.58 (according to the 2007 international relative atomic weight)

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

2. Fully cover the laboratory and allocate localized testing nearby

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