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SN/T 3341-2012 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 3341-2012: Determination of sulfide in gypsum plasterboard. Methylene blue spectrophotometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 3341-2012	209	Add to Cart	3 days	Determination of sulfide in gypsum plasterboard. Methylene blue spectrophotometric method	Valid

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SN/T 5268

Basic data

Standard ID: SN/T 3341-2012 (SN/T3341-2012)
Description (Translated English): Determination of sulfide in gypsum plasterboard. Methylene blue spectrophotometric method
Sector / Industry: Commodity Inspection Standard (Recommended)
Word Count Estimation: 8,858
Quoted Standard: GB/T 6379.2; GB/T 6682; GB/T 21297
Regulation (derived from): National Quality Inspection (2012) 777; industry standard filing Notice 2013 No. 4 (No. 160 overall)
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the methylene blue spectrophotometric determination of sulfide content of gypsum board. This standard applies to plasterboard sulfide content. Measuring range: gypsum board sulphide content (calculated by hydrogen sulfide) is 0. 50

SN/T 3341-2012: Determination of sulfide in gypsum plasterboard. Methylene blue spectrophotometric 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 sulfide in gypsum plasterboard.Methylene blue spectrophotometric method People's Republic of China Entry-Exit Inspection and Quarantine Standards Gypsum board sulfide Determination of methylene blue Issued on. 2012-12-12 2013-07-01 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 of the content of this document may involve patents. Distribution 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 was drafted. Tianjin People's Republic of China Exit Inspection and Quarantine. The main drafters of this standard. Wei Hongbing, Yang Lifei, Su-Mei Wang, Gao Bo, Su Mingyue, Chan Kwong Chi. Gypsum board sulfide Determination of methylene blue

1 Scope

This standard specifies the content of the methylene blue spectrophotometric determination of sulfide in plasterboard. This standard applies to the determination of sulfide content in the gypsum board. Measurement range. gypsum board sulphide content (hydrogen sulfide calculation) is 0.50μg/g ~ 80.00μg/g.

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/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat Of the basic methods of reproduction Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 21297 tapered frosted glass laboratory equipment swap connector

3 Method summary

Sample with a solution of hydrochloric acid decomposition sulfide, hydrogen sulfide produced by cadmium acetate buffer solution absorption, cadmium sulfide precipitate is formed, adding sulfuric acid solution Liquid hydrogen sulfide, hydrogen sulfide and methylene blue solution and the role of ferric chloride solution to produce methylene blue. With a spectrophotometer Color quantification.

4 Reagents

Unless otherwise specified, all reagents were of analytical grade, test water for the two water or GB/T 6682 as specified in the above specifications. 4.1 hydrochloric acid (ρ = 1.19g/mL). 4.2 sulfate (ρ = 1.84g/mL). 4.3 acetic acid (ρ = 1.05g/mL). 4.4 cadmium sulfate. 4.5 sodium hydroxide. 4.6 ammonium polyvinyl alcohol. 4.7 pairs of amino-dimethylaniline hydrochloride. 4.8 ferric chloride. 4.9 diammonium phosphate. 4.10 iodate, level. 4.11 sodium thiosulfate. 4.12 sodium carbonate. 4.13 starch. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 3341-2012_English be delivered?

Answer: Upon your order, we will start to translate SN/T 3341-2012_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 3341-2012_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 3341-2012_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.