SN/T 2307-2009 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2307-2009	279	Add to Cart	3 days	Rapid determination of formaldehyde release of Wood-based panels and products. Gas analysis method	Obsolete

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Basic data

Standard ID: SN/T 2307-2009 (SN/T2307-2009)
Description (Translated English): Rapid determination of formaldehyde release of Wood-based panels and products. Gas analysis method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: B70
Classification of International Standard: 79.010
Word Count Estimation: 7,727
Date of Issue: 2009-07-07
Date of Implementation: 2010-01-16
Quoted Standard: GB/T 6822; GN/T 17657-1999
Adopted Standard: BS EN 717-2-1995, MOD
Regulation (derived from): National Quality Inspection [2009] No. 290
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the rapid determination of the gas analysis panels and decorative formaldehyde liberation approach. This standard applies to the gas analysis panels and decorative Rapid Determination of formaldehyde liberation.

SN/T 2307-2009: Rapid determination of formaldehyde release of Wood-based panels and products. Gas analysis method

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Rapid determination of formaldehyde release of Wood-based panels and products.Gas analysis method Exit inspection and quarantine industry standard book People's Republic of China Plywood and their products formaldehyde emission Rapid Determination of the gas analysis method Posted 2009-07-07 2010-01-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This revised standard adopts BSEN717-2.1995 "plywood and their products, formaldehyde release - Part 2. Gas Analysis" (English Chinese Version). This revised standard adopts BSEN717-2.1995, technical differences are as follows. a) modify the references of normative documents; b) increase the terms and definitions; c) moisture content determination reference GB 17657-1999; d) formaldehyde test method references GB 17657-1999; e) cancel the test report indicates. For ease of use, for BSEN717-2.1995 standard preface also made editorial changes. Appendix A of this standard is a normative appendix. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Guangdong CIQ. The main drafters of this standard. Guoren Hong, Zhang Zhihui, Lu Ruijiang, Duzhan You. This standard is the first release of the entry-exit inspection and quarantine industry standards. Plywood and their products formaldehyde emission Rapid Determination of the gas analysis method

1 Scope

This standard specifies the method for panels and veneer plywood formaldehyde emission of the gas analysis by fluorescence microscopy. This standard applies to gas analysis panels and decorative rapid determination of formaldehyde liberation.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 17657-1999 panels and veneer plywood physical and chemical performance test method

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 This standard specifies the sample in a test chamber measuring unit area in unit time to release absorbed liquid (water) in the amount of formaldehyde, in milli Grams per square meter hours [mg/(m2 · h)] FIG. Principle 4 A sample of known surface area into a certain temperature, humidity, gas flow and pressure of the test chamber, and the sample test of formaldehyde release Air mixing chamber, a mixed gas of formaldehyde absorbed flask continually being absorbed absorbing liquid chamber connected to the test. Spectrophotometry Determination of the surface area of the absorbing liquid concentration of formaldehyde, formaldehyde concentration by the absorption time and the sample to calculate the formaldehyde emission of the sample, in milli Grams per square meter hours [mg/(m2 · h)] FIG.

5 Reagents and materials

Unless otherwise indicated, reagents were analytical grade and water of at least reached GB/T 6682 provisions grade 3 purity water or deionized water. 5.1 potassium iodide (KI). 5.2 potassium dichromate (K2Cr2O7), pure class distinctions. 5.3 sodium thiosulfate (Na2S2O3 · 5H2O). 5.4 mercuric iodide (HgI2). 5.5 anhydrous sodium carbonate (Na2CO3). 5.6 sulfate (H2SO4), ρ = 1.84g/mL. 5.7 hydrochloric acid (HCl), ρ = 1.19g/mL. 5.8 Sodium hydroxide (NaOH). 5.9 iodine (I2). 5.10 soluble starch. ......

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