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SN/T 4751-2017 English PDF

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US$139.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 4751-2017: Determination of parachlorometaxylenol in import and export textiles. Gas chromatography-mass spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 4751-2017	139	Add to Cart	2 days	Determination of parachlorometaxylenol in import and export textiles. Gas chromatography-mass spectrometry	Valid

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Basic data

Standard ID: SN/T 4751-2017 (SN/T4751-2017)
Description (Translated English): Determination of parachlorometaxylenol in import and export textiles. Gas chromatography-mass spectrometry
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: W55
Word Count Estimation: 6,692
Date of Issue: 2017-05-12
Date of Implementation: 2017-12-01
Regulation (derived from): National Quality Inspection (2017) 228
Issuing agency(ies): General Administration of Customs

SN/T 4751-2017: Determination of parachlorometaxylenol in import and export textiles. Gas chromatography-mass spectrometry

---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.
(Textiles - Import - export textiles - Determination of xylenol - Gas chromatographic - mass spectrometry) People's Republic of China entry and exit inspection and quarantine industry standards Determination of Chloro-xylenol in Import and Export Textiles Gas chromatography-mass spectrometry Released on.2017-05-12 2017-12-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued Entry-Exit Inspection and Quarantine Industry Standard Determination of Chloro-xylenol in Import and Export Textiles Gas chromatography-mass spectrometry China Standard Press Publishing First edition, May.2018

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Jiangsu Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Gu Juanhong, Xu Zhendong, Pan Kui, Zhu Zhenhua, Liu Yan. Determination of Chloro-xylenol in Import and Export Textiles Gas chromatography-mass spectrometry Caution - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions. question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations.

1 Scope

This standard specifies the method for the determination of p-chloro-xylenol in textiles by gas chromatography-mass spectrometry. This standard applies to the determination of the content of p-chloro-xylenol in textiles.

2 Normative references

The following documents are indispensable for the application of this document. 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 Numerical Rounding Rules and Representation and Determination of Limit Values

3 Principle

The textile sample was extracted by ultrasonic wave with absolute ethanol, and the volume of the extract was determined by gas chromatography-mass spectrometry (GC-MS). Quantitative.

4 reagents and materials

The reagents used in the analysis were of analytical grade unless otherwise stated. 4.1 Anhydrous ethanol. 4.2 p-chloro-xylenol. CAS number. 88-04-0, purity ≥ 99.0%. 4.3 p-Chloryl dimethyl phenol standard stock solution (1000mg/L). accurately weigh the appropriate amount of p-chloro-xylenol (4.2) standard, with absolute ethanol Or other suitable solvent is formulated into a standard stock solution of 1000 mg/L. Note. The standard stock solution is stored at -18 ° C in the dark and is valid for 12 months. 4.4 p-Chlo-xylenol standard working solution. Transfer the standard stock solution (4.3) to the appropriate volume, dilute with absolute ethanol or other suitable solvent Release, formulated into the standard working solution of the desired concentration. Now available.

5 Instruments and equipment

5.1 Gas Chromatography-Mass Spectrometry (GC-MS). equipped with an electron bombardment source (EI). 5.2 Balance. The sensitivity is 0.01g and 0.1mg. 5.3 Ultrasonic cleaner. Operating frequency 40kHz. 5.4 Extractor. Tubular, with a closed plug, about 50mL, made of hard glass. 5.5 Filter. Organic phase needle (0.45 μm). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 4751-2017_English be delivered?

Answer: Upon your order, we will start to translate SN/T 4751-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of SN/T 4751-2017_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 4751-2017_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.