Download or read book GB 31604 60 2024 Translated English of Chinese Standard GB 31604 60 2024 GB31604 60 2024 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-05-05 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the gas chromatography and gas chromatography-mass spectrometry to determine the residues of 25 solvents, such as cyclohexane, methylcyclohexane, acetone, ethyl acetate, methanol, isopropyl acetate, butanone, isopropyl alcohol, ethanol, n-propyl acetate, 4-Methyl-2-pentanone, n-propanol, butyl acetate, isobutanol, n-butanol, ethylene glycol methyl ether acetate, propylene glycol methyl ether acetate, propylene glycol methyl ether, propylene glycol ethyl ether, benzene, toluene, ethylbenzene, o-xylene, p-xylene, and m-xylene in the food contact composite materials and products. This Standard is applicable to the determination of solvent residues in food contact composite materials and products. Method-I Gas Chromatography

Download or read book GB 31604 54 2023 Translated English of Chinese Standard GB 31604 54 2023 GB31604 54 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-02-07 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the methods for the determination of migration of bisphenol F and S in food contact materials and products by liquid chromatography and liquid chromatography - tandem mass spectrometry. Method 1 - liquid chromatography is applicable to the determination of migration of bisphenol F and S in plastic materials and products for food contact, paints and coatings for food contact, paper and cardboard materials and products for food contact. Method 2 - liquid chromatography - tandem mass spectrometry is applicable to the determination of migration of bisphenol F and S in food contact materials and products. Method 1 - Liquid Chromatography

Download or read book GB 31604 29 2023 Translated English of Chinese Standard GB 31604 29 2023 GB31604 29 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-02-19 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the determination method for the migration of acrylic acid and methacrylic acid and their esters in food contact materials and products. Part 1 ¨C Gas chromatography-mass spectrometry applies to the determination of migration of 18 kinds of acrylate and methacrylate in food contact ma

Download or read book GB 31604 47 2023 Translated English of Chinese Standard GB 31604 47 2023 GB31604 47 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-02-19 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the method for the determination of fluorescent substances in food contact paper, cardboard, and paper products. This standard is applicable to the determination of fluorescent substances in food contact paper, cardboard, and paper products.

Download or read book GB 31604 1 2023 Translated English of Chinese Standard GB 31604 1 2023 GB31604 1 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-01-27 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies the terms and definitions, basic requirements, selection of food simulants, selection of migration testing conditions, screening methods, chemical solvent substitution test, migration testing result correction and migration testing result selection of various food contact materials and products. 2 Terms and definitions 2.1 Migration testing Migration testing refers to a test conducted under specified conditions to determine the amount of migration of components of food contact materials and products into test medium such as food or food simulants in contact with them. Migration testing includes specific migration testing, total migration testing and chemical solvent substitution test. 2.2 Food simulant Food simulant is a test medium used to simulate food for migration testing. It can closely reflect the migration of components in food contact materials and products into the food in contact with them, and has the typical common characteristics of certain types of food. 2.3 Screening method It is a method that uses the amount used, total migration amount or residue amount to screen for specific migration (total) amount, so as to verify the compliance of a specific migration (total) amount of a certain (category) substance in food contact materials and products. 2.4 Chemical solvent substitution test A migration testing conducted under specified conditions using chemical solvents to replace oily food simulants. 2.5 Reusable food contact materials and products Food contact materials and products that have been or are expected to be used multiple times and come into repeated contact with food. GB 31604.1-2023 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery. Page 5 of 19 3 Basic requirements 3.1 To measure the total migration amount of food contact materials and products, food simulants shall be selected and migration testing shall be conducted in accordance with the provisions of this Standard. 3.2 Regarding the determination of the specif...