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Scope This standard specifies the determination and method of aflatoxin M and aflatoxin M2 (hereinafter referred to as AFT M and AFT M2) in food The first method is isotope dilution liquid chromatography tandem mass spectrometry, which is suitable for the determination of AFT M: and AFT M2 in milk, dairy products, and special dietary foods containing milk The second method is high-performance liquid chromatography, with the same scope of application as the first method The third method is the enzyme-linked immunosorbent assay (ELISA) screening method, which is suitable for the screening and determination of AFTM in milk, dairy products, and special dietary foods containing milk Isotope Dilution Liquid Chromatography Tandem Mass Spectrometry Principle The aflatoxin M and aflatoxin Mz in the sample were extracted with methanol aqueous solution, the supernatant was diluted with water or phosphate buffer, purified and enriched by an immunoaffinity column, and the purified solution was concentrated. After constant volume and filtration, they were separated by liquid chromatography, detected by tandem mass spectrometry, and quantified by isotope internal standard method 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 problems100% inspection and 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 requiredTesting and testing characteristics:1. The testing industry is fully covered, meeting different testing needs 2. Fully cover the laboratory and allocate localized testing nearby3. 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
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