GB 5009.233-2016 PDF EnglishUS$70.00 · In stock · Download in 9 seconds
GB 5009.233-2016: Method for analysis of hygienic standard of vinegar Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB 5009.233-2016: Method for analysis of hygienic standard of vinegar---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB5009.233-2016GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA National Food Safety Standard - Determination of Free Mineral Acid in Vinegar ISSUED ON: AUGUST 31, 2016 IMPLEMENTED ON: MARCH 01, 2017 Issued by: National Health and Family Planning Commission of the PRC Table of ContentsForeword ...3 1 Scope ...4 2 Principle ...4 3 Reagents and materials ...4 4 Analysis steps ...5 5 Analysis result ...5 6 Others ...5 National Food Safety Standard - Determination of Free Mineral Acid in Vinegar1 ScopeThis Standard specifies the method for determination of free mineral acid in vinegar. This Standard applies to the determination of free mineral acid in vinegar2 PrincipleWhen there is free mineral acid (such as sulfuric acid, nitric acid, hydrochloric acid), the concentration of hydrogen ions increases, and the color of the indicator can be changed.3 Reagents and materialsUnless otherwise specified, all the reagents in this method are analytical reagents, the water is grade-1 water that is specified by GB/T 6682. 3.1 Reagents 3.1.1 Thymol blue. 3.1.2 Methyl violet (C25H30N3Cl). 3.1.3 Sodium hydroxide (NaOH). 3.1.4 Ethanol (CH3CH2OH). 3.2 Preparation of reagents 3.2.1 Sodium hydroxide solution (4 g/L): take 2 g of sodium hydroxide to dissolve in water; add water to 500 mL. 3.2.2 Thymol blue test paper: take 0.10 g of thymol blue to dissolve in 50 mL of ethanol; add 6 mL of sodium hydroxide solution (4 g/L); add water to 100 mL. Use the solution to soak the filter paper; then dry it, and store for later use. 3.2.3 Methyl violet test paper: weigh 0.10 g of methyl violet to dissolve in 100 mL of water; immerse the filter paper in this solution; take it out and dry it; store for later use. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 5009.233-2016 be delivered?Answer: The full copy PDF of English version of GB 5009.233-2016 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 5009.233-2016_English with my colleagues?Answer: Yes. The purchased PDF of GB 5009.233-2016_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB 5009.233-2016 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB 5009.233-2016?A step-by-step guide to download PDF of GB 5009.233-2016_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB 5009.233-2016". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
