Surface water/environmental and environmental testing

This standard refers to the international standard ISO 7027-1984 "Water quality - Determination of turbidity". 1. Theme and Scope of Application 1-1 This standard specifies two methods for measuring turbidity in water. The first part of the spectrophotometry is applicable to drinking water, natural water, and high turbidity water, with a minimum detection turbidity of 3 degrees. The second article, Visual Turbidimetry, is applicable to low turbidity water such as drinking water and source water, with a minimum detection turbidity of 1 degree. 1.2 The water should be free of debris and easily settling particles. If the utensils used are not clean, or there are dissolved bubbles and colored substances in the water that interfere with the measurement. The first principle of spectrophotometry 2 is that at an appropriate temperature, peroyl sulfate polymerizes with hexamethylenetetramine to form a white polymer, which serves as a turbidity standard solution and is compared with the turbidity of water samples under certain conditions. Unless otherwise specified, pure reagents that comply with national or professional standards, deionized water, or water of equal purity shall be used for analysis. 31 'turbidity free water is filtered through a 0.2 um membrane and collected in a flask washed twice with filtered water

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