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SN/T 3936-2014 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 3936-2014: Determination of sodium sulfide in gourmet powder for export
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 3936-2014	209	Add to Cart	3 days	Determination of sodium sulfide in gourmet powder for export	Valid

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Basic data

Standard ID: SN/T 3936-2014 (SN/T3936-2014)
Description (Translated English): Determination of sodium sulfide in gourmet powder for export
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X66
Classification of International Standard: 67.220.10
Word Count Estimation: 8,862
Date of Issue: 4/9/2014
Date of Implementation: 11/1/2014
Quoted Standard: GB/T 6682-2008; GB/T 16489-1996
Regulation (derived from): State inspection certification (2014) 210
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the method for the determination of sodium sulfide content of MSG. This standard applies to 99% of MSG, monosodium glutamate and salt by fresh MSG sulfide content testing.

SN/T 3936-2014: Determination of sodium sulfide in gourmet powder for export

---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 sulfide content in export MSG) People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of sulfide content in export MSG 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. Please note that some content of this document may involve patents, publication of this document Institutions do not assume the responsibility to identify these patents. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard by the People's Republic of China Liaoning Entry Inspection and Quarantine Bureau, Inspection and Quarantine of Hunan Institute of Science and Technology is responsible for drafting. The main drafters of this standard. Xing right, generous Xue, Liu famous, Pang Yanhua, Dongzhen Lin, Xiao Shanshan, Dong Weifeng, Liushu Yan, Yanhuai Yu, Lin Weixuan, Wenzhi Hai, Cao Juan occasion, Huang Zhiqiang. Determination of sulfide content in export MSG

1 Scope

This standard specifies the method for the determination of sodium sulfide content of MSG. This standard applies to 99% of MSG, monosodium glutamate and salt by fresh MSG sulfide content testing.

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. GB/T 16489-1996 Water quality - Determination of sulfide methylene blue spectrophotometric method

3 Method summary

The sample was 250mmol/L sodium hydroxide solution and extracted through the membrane purification, ion chromatography, external standard.

4 Reagents and materials

Unless otherwise stated, all reagents superior grade of pure water as a water GB/T 6682-2008 specified (by boiling and ultrasound cool off After the gas use). 4.1 sodium hydroxide. 4.2 anhydrous sodium acetate. 4.3 Sodium hydroxide solution (50%, mass fraction). weighing the container in polypropylene with 30g sodium hydroxide (4.1), was added 30g of water, After mixing fully dissolved, allowed to stand at 4 ℃ refrigerator overnight. Use rewarming, while maintaining the solution level does not tilt or shake to take in Interlayer use. 4.4 Sodium hydroxide solution (250mmol/L). Weigh 10g of sodium hydroxide (4.1), completely dissolved and set the volume to 1L. 4.5 100mmol/L sodium hydroxide -250mmol/L sodium acetate eluent. Weigh 20.5g of anhydrous sodium acetate (4.2) was dissolved in 995mL water , A 0.2μm nylon filter after filtration, was added 5.25mL50% sodium hydroxide solution (4.3). Now eluent with a good set 34.5kPa ~ 55.2kPa conditions under argon protection, to prevent contamination. 4.6 Standard substance sodium sulfide (Na2S · 9H2O, CAS number. 1313-84-4). molecular weight 240.17, purity of greater than or equal At 98%. 4.7 sodium sulfide standard stock solution. the amount of 10mL by boiling and let cool ultrasonic degassing deionized water was added to the weigh in Polypropylene container is cleared. Take appropriate standard substance (4.6), quickly rinse with water and dry filter paper surface treatment, immediately placed in the balance Standard stock solution on the prepared container, weighed and formulated into an appropriate amount of sodium sulfide concentration (in S2- basis), with the former press GB/T 16489- 4.15 and 4.16 in the 1996 method defined calibration concentration, dark at 4 ℃ sealed storage. 4.8 sodium sulfide standard working solution. Pipette the appropriate amount of sodium sulfide has been calibrated (in S2- meter) standard stock solution with a negative sample matrix ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 3936-2014_English be delivered?

Answer: Upon your order, we will start to translate SN/T 3936-2014_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 3936-2014_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 3936-2014_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.