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SN/T 3931-2014 English PDF

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US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 3931-2014: Determination of formic acid and formate in export food by ion chromatography method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 3931-2014	209	Add to Cart	3 days	Determination of formic acid and formate in export food by ion chromatography method	Valid

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Basic data

Standard ID: SN/T 3931-2014 (SN/T3931-2014)
Description (Translated English): Determination of formic acid and formate in export food by ion chromatography method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 8,897
Date of Issue: 4/9/2014
Date of Implementation: 11/1/2014
Quoted Standard: GB/T 6682-2008
Regulation (derived from): State inspection certification (2014) 210
Issuing agency(ies): General Administration of Customs
Summary: This standard provides the food for export by ion chromatography method for the determination of formic acid and its salts. This standard applies to fruit juice, wine, determination of milk, fruit popsicles, ice cream, candy and cookies in formic acid and

SN/T 3931-2014: Determination of formic acid and formate in export food by ion chromatography method

---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 formic acid and formate in export food by ion chromatography method People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of food for export of formic acid and its salts Ion Chromatography Issued on. 2014-04-09 2014-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This 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. Tianjin People's Republic of China Exit Inspection and Quarantine. The main drafters. Zhang Hua, Liu Yang, Chenqi Yong, Cui Ying, Zhao Ting, Wang Song, Wang Wei, Gebao Kun, Lin Anqing. Determination of food for export of formic acid and its salts Ion Chromatography

1 Scope

This standard provides the food for export by ion chromatography method for the determination of formic acid and its salts. This standard applies to fruit juice, wine, determination of milk, fruit popsicles, ice cream, candy and cookies in formic acid and its salts.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682-2008 Analysis

3 Method summary

After the sample extract formate ion (HCOO-) by the water, the use of RP and Ag/H solid-phase extraction (SPE), and then potassium hydroxide solution Rinsing liquid, the anion exchange column, the conductivity detector. Retention time qualitative, external standard.

4 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade water as a water GB/T 6682-2008 requirements. 4.1 Potassium hydroxide eluent. from automatic electrolytic eluent generator (or other automatically generated eluent device) or manually with the online generation Set potassium (or sodium) eluent. 4.2 acetonitrile. HPLC grade. 4.3 Methanol. HPLC grade. 4.4 Standard. sodium (Sodiumformate, CAS number. 141-53-7). Purity ≥99.0%. 4.5 HCOO- standard stock solution (1000mg/L). Weigh sodium standard (4.4) 1.511g, dissolved in high purity water and dilute to 1000mL, dubbed containing HCOO-1000mg/L standard stock solution was placed under a brown bottle 0 ℃ ~ 4 ℃ conditions can be stable for two months. 4.6 HCOO- standard dilutions (100mg/L). lessons HCOO- stock standard solution 10mL, with high water volume to 100mL, HCOO- a concentration of 100mg/kg. Preparation used. 4.7 HCOO- standard dilutions (10mg/L). lessons HCOO- stock standard solution 1mL, with high water volume to 100mL, HCOO- concentration of 10mg/kg. Preparation used. 4.8 HCOO- standard solution. as needed HCOO- standard dilutions (4.5 and 4.6) diluted to 0.05mg/L, 0.1mg/L, 0.2mg/L, 0.4mg/L, 0.6mg/L, 0.8mg/L, 1.0mg/L of standard solution. Preparation used. 4.9 Solid Phase Extraction (SPE) column. OnGuardⅡRP column (1.0mL), or equivalent person. Before using sequentially with 10mL of methanol, 15mL water By standing activation 30min. 4.10 Solid Phase Extraction (SPE) column. OnGuardⅡ Ag/H column (1.0mL), or equivalent person. 10mL water prior to use by, standing live Of 30min. 4.11 0.22μm microporous membrane. River. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 3931-2014_English be delivered?

Answer: Upon your order, we will start to translate SN/T 3931-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of SN/T 3931-2014_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 3931-2014_English will be deemed to be sold to your employer/organization who actually pays 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+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.