SN/T 4122-2015 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 4122-2015: Food contact material. Paper, regenerated fiber material. Determination of boric acid Status: Valid
Basic dataStandard ID: SN/T 4122-2015 (SN/T4122-2015)Description (Translated English): Food contact material. Paper, regenerated fiber material. Determination of boric acid Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: X08 Classification of International Standard: 67.250 Word Count Estimation: 8,865 Date of Issue: 2015-02-09 Date of Implementation: 2015-09-01 Regulation (derived from): State-Quality-Inspection-Accreditation [2015] 59 Issuing agency(ies): General Administration of Customs Summary: This standard specifies the method for determination of paper, recycled fiber food contact materials boric acid. This standard applies to the paper, measuring fiber food contact materials in the acid regeneration. SN/T 4122-2015: Food contact material. Paper, regenerated fiber material. Determination of boric acid---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. (Determination of food contact materials paper, recycled fiber material boric acid) People's Republic of China Entry-Exit Inspection and Quarantine Standards Food contact materials paper, recycled fiber material Determination of boric acid Foodcontactmaterial-Paper, regeneratedfibermaterial- Issued on. 2015-02-09 2015-09-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai Science and Technology Co., Ltd. inshore. The main drafters of this standard. Min, Fan Xiang, Ran Xiaoyuan, Yang Jie Lin, Li Han, Miao Wenbin, Qu Li, Deng Xiaojun, He Yuping. Food contact materials paper, recycled fiber material Determination of boric acid1 ScopeThis standard specifies the method for determination of paper, recycled fiber food contact materials boric acid. This standard applies to the paper, measuring fiber food contact materials in the acid regeneration. The first law-ethyl hexane diol - chloroform extraction colorimetry turmeric Principle 2 By ethylhexyl glycol - chloroform solution of boric acid in the sample for rapid enrichment, extraction, excluding the impact of the coexistence of salts, use Turmeric mixed with concentrated sulfuric acid to generate the protonated acid and turmeric red reaction product. Color depth and sample solution of Boric Acid into Proportional, boric acid content in the sample can be measured by a colorimetric.3 reagent materialUnless otherwise indicated, the reagents used were of analytical grade water to comply with GB/T 6682 secondary deionized water. 3.1 concentrated sulfuric acid. 3.2 sulfuric acid solution (11, volume ratio). 3.3 ethanol. 3.4 Turmeric - glacial acetic acid solution. Weigh 0.10g of curcumin dissolved in 100mL glacial acetic acid, the solution was stored in plastic containers. Ethyl hexanediol 3.5 - chloroform (EHD-CHCl3) solution. 2-ethyl-1,3-hexanediol draw 10mL, diluted to add chloroform 100mL, the solution was stored in plastic containers. 3.6 boric acid standard stock solution (500mg/L). Weigh after drying in a sulfuric acid desiccator 5h boric acid 0.0500g (mass fraction is not small To 99.9%), dissolved in water and dilute to 100mL, stored in plastic bottles. The preparation of the solution at 0 ℃ ~ 4 ℃ refrigerator for up to 6 months. 3.7 borate standard solution (5mg/L). Imbibe 1.0mL acid standard stock solution to a 100mL flask, water volume To the mark, stored in plastic bottles. The preparation of the solution at 0 ℃ ~ 40 ℃ refrigerator can be stored for 3 months.4 instruments and equipment4.1 Analytical balance, a sense of the amount of 0.1mg and 0.01g. 4.2 Preparation of ultra-pure water system. 4.3 Vortex. 4.4 Spectrophotometer. 4.5 stainless steel scissors. NOTE. The containers are plastic containers, and HNO3 (10 90, by volume) to soak for more than 24h, repeatedly washed with deionized water to dry after use. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 4122-2015_English be delivered?Answer: Upon your order, we will start to translate SN/T 4122-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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