GB/T 34842-2017 English PDFUS$118.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 34842-2017: Footwear -- Chemical tests -- Determination of formamide Status: Valid
Basic dataStandard ID: GB/T 34842-2017 (GB/T34842-2017)Description (Translated English): Footwear -- Chemical tests -- Determination of formamide Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Y78 Classification of International Standard: 61.060 Word Count Estimation: 7,750 Date of Issue: 2017-11-01 Date of Implementation: 2018-05-01 Regulation (derived from): National Standard Announcement 2017 No. 29 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China GB/T 34842-2017: Footwear -- Chemical tests -- Determination of formamide---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.Footwear-Chemical tests-Determination of formamide ICS 61.060 Y78 National Standards of People's Republic of China Footwear chemical test method for the determination of formamide Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of this document may be patentable. The release of this document The agency does not assume responsibility for identifying these patents. This standard proposed by the China Light Industry Federation. This standard by the National Standardization Technical Committee shoes (SAC/TC305) centralized. This standard drafting unit. Shenzhen Institute of Metrology and Quality Inspection, China Leather and Footwear Industry Research Institute, Dongguan City, New Tiger Industries have Limited company, Zhejiang everything Long Sporting Goods Co., Ltd. The main drafters of this standard.Lin Wei Wei, Chang Kai, Zhang Fu, Hu Ju You, Feng Xu root. Footwear chemical test method for the determination of formamide1 ScopeThis standard specifies the use of gas chromatography - mass spectrometry method for the determination of footwear and footwear components foam formamide method. This standard applies to the determination of foaming materials formamide in footwear and footwear components.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 8170 rounded repair rules and limit values of the representation and judgment3 principleRepresentative samples were extracted with methanol in a closed environment, the extract was filtered through a membrane filter and confirmed by gas chromatography-mass spectrometry, External standard method.4 reagent4.1 methanol, chromatography pure. 4.2 formamide standard material, purity ≥ 99.0% (CAS.75-12-7). 4.3 formamide standard stock solution (100μg/mL) Accurately weigh 0.0100g formamide standard material (4.2) in 100mL volumetric flask , Dissolve with methanol (4.1) and dilute to volume. 4.4 formamide standard working solution were accurately Pipette 100μg/mL formamide standard stock solution (4.3) 0.00mL, 0.25mL, 2.00mL, 5.00mL, 10.00mL, 25.00mL in 50mL volumetric flask, diluted with methanol (4.1) to the mark, formulated at a concentration of 0μg/mL, 0.5μg/mL, 4μg/mL, 10μg/mL, 20μg/mL, 50μg/mL standard series of solutions.5 instruments and equipment5.1 Gas Chromatography-Mass Spectrometer (GC-MS) with Electron Impact Ionization (EI). 5.2 Analysis of the balance, a sense of the amount of 0.1mg. 5.3 constant temperature water bath oscillator, temperature (60 ± 2) ℃, oscillation frequency of about 150 times/min. 5.4 reaction bottle, with a screw cap, can be closed, the volume of about 22mL. 5.5 Pipettes or pipettes .1 mL, 2 mL and 10 mL. 5.6 organic filter, pore size of 0.45μm.6 Analysis steps6.1 Sampling and storage Samples taken should be representative, cut into any side no more than 3mm small pieces, sample sampling and transfer process should be as fast as possible ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 34842-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 34842-2017_English as soon as possible, and keep you informed of the progress. 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