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SN/T 2554-2010 English PDF

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US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 2554-2010: Determination of free formaldehyde in adhesives used in building for import and export
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2554-2010	239	Add to Cart	3 days	Determination of free formaldehyde in adhesives used in building for import and export	Valid

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Basic data

Standard ID: SN/T 2554-2010 (SN/T2554-2010)
Description (Translated English): Determination of free formaldehyde in adhesives used in building for import and export
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: Q27
Classification of International Standard: 91.100.50
Word Count Estimation: 9,991
Date of Issue: 2010-05-27
Date of Implementation: 2010-12-01
Quoted Standard: GB 18583-2008
Regulation (derived from): National Quality Inspection (2010) 290; industry standard filing Notice 2010 No. 10 (No. 130 overall)
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the import and export of plastic used in construction of free formaldehyde by HPLC method, the method provides for import and export of building two free formaldehyde glue gas chromatographic method. This standard applies to import construction with plastic Determination of free formaldehyde.

SN/T 2554-2010: Determination of free formaldehyde in adhesives used in building for import and 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 free formaldehyde in adhesives used in building for import and export People's Republic of China Entry-Exit Inspection and Quarantine Standards Importers construction Determination of Formaldehyde glue free importandexport Issued on. 2010-05-27 2010-12-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. Xiamen, People's Republic of China Exit Inspection and Quarantine. The main drafters of this standard. Lai Ying, Cai Yanping, Wang Honghui, Dong Qing wood, Huang Changchun, Huangzong Ping Chen and show Zheng Li Chun, Sea. This standard is the first release of the entry-exit inspection and quarantine industry standards. Importers construction Determination of Formaldehyde glue free

1 Scope

This standard specifies a method of import and export construction glue free formaldehyde HPLC method, Method II provides access Port building free of formaldehyde gas chromatographic method using glue. This standard applies to import and export building measuring formaldehyde free glue.

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. GB 18583-2008 interior decoration materials, adhesives harmful substances A HPLC Method 3 3.1 Principle Ultrasonic extraction of water samples free formaldehyde, extract with 2,4-dinitrophenylhydrazine derivatization occurs at 60 ℃, to form a stable 2,4- Dinitrophenylhydrozones, after filtration, high performance liquid chromatography detection. According to their retention time qualitative, external standard. 3.2 Reagents and materials Unless otherwise indicated, the reagents used were of analytical grade, water is deionized water or equivalent purity. 3.2.1 acetonitrile. chromatography. 3.2.2 2,4-dinitrophenylhydrazine (DNPH). AR, before use recrystallized from acetonitrile three times to remove the presence of formaldehyde -DNPH Impurities. 3.2.3 0.3% dinitrophenylhydrazine solution. Weigh 0.75g2,4- dinitrophenylhydrazine (3.2.2) in 250mL flask, dissolved in acetonitrile And to volume. 3.2.4 Formaldehyde standard solution (1mg/mL). commercially available, or press GB 18583-2008 Appendix A calibration use. 3.2.5 formaldehyde standard stock solution. accurately Pipette 2mL formaldehyde standard solution (3.2.4) in 200mL. Flask, dubbed the concentration of 10μg/mL of formaldehyde standard solution, this solution was left 0 ℃ ~ 4 ℃ can be stored in the refrigerator for a week. 3.2.6 Formaldehyde standard solution series. respectively Pipette 0,0.25mL, 0.50mL, 1.25mL, 2.50mL, 5.00mL, 10.00mL, 20.00mL formaldehyde stock solution (3.2.5) to eight 25mL volumetric flask, dilute to the mark, were dubbed the concentration 0,0.10μg/mL, 0.20μg/mL, 0.50μg/mL, 1.0μg/mL, 2.0μg/mL, 4.0μg/mL, 8.0μg/mL of the formaldehyde standard Quasi working solution series. 3.3 instruments and equipment 3.3.1 High performance liquid chromatography with UV - visible detector. 3.3.2 ultrasonic cleaner (≥220W). 3.3.3 vortex mixer. 3.3.4 Centrifuge. 4000r/min. 3.3.5 Electronic balance. accurate to 0.1mg. 3.3.6 organic membranes. 0.45μm. 3.4 Analysis Steps 3.4.1 Extraction He said sample after mixing learn about 1g (accurate to 0.0002g), with a stopper placed in 25mL colorimetric tube, diluted with water to the mark. In the swirling ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 2554-2010_English be delivered?

Answer: Upon your order, we will start to translate SN/T 2554-2010_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 2554-2010_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 2554-2010_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.