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SN/T 0962-2010 English PDF

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Q: Should I purchase the latest version SN/T 0962-2010?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version SN/T 0962-2010 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$139.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 0962-2010: Determination of sodium tungstate content in sodium tungstate for import and export
Status: Valid

SN/T 0962: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 0962-2010	139	Add to Cart	2 days	Determination of sodium tungstate content in sodium tungstate for import and export	Valid
SN/T 0962-2000	199	Add to Cart	2 days	Method for the determination of sodium tungstate content in sodium tungstate for import and export	Obsolete

Similar standards

YS/T 1297 GB/T 1479.2 GB/T 1479.1 SN/T 0951

Basic data

Standard ID: SN/T 0962-2010 (SN/T0962-2010)
Description (Translated English): Determination of sodium tungstate content in sodium tungstate for import and export
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: H16
Classification of International Standard: 77.160
Word Count Estimation: 5,576
Date of Issue: 2010-05-27
Date of Implementation: 2010-12-01
Older Standard (superseded by this standard): SN/T 0962-2000
Quoted Standard: GB/T 603; GB/T 6678; GB/T 6679
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 sodium tungstate in the method for determination of sodium tungstate. This standard applies to imports of sodium tungstate tungsten content. Note: Sodium tungstate relative molecular mass: 329. 86 (according to 2007 international relative atomic mass).

SN/T 0962-2010: Determination of sodium tungstate content in sodium tungstate 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 sodium tungstate content in sodium tungstate for import and export People's Republic of China Entry-Exit Inspection and Quarantine Standards Instead of the SN/T 0962-2000 Determination of sodium tungstate in the import and export of sodium tungstate content 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

Instead of the standard SN/T 0962-2000 "Determination of sodium tungstate import and export of sodium tungstate content." The main difference compared with the standard SN/T 0962-2000 as follows. --- Relative molecular mass of sodium tungstate changed from 329.82 to 329.86. --- WO3 in terms of Na2WO4 · H2O coefficient changed from 1.4224 to 1.4228. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard by the Tianjin People's Republic of China Exit Inspection and Quarantine is responsible for drafting. The main drafters of this standard. Liu Shao from Sun Shujun, Liu Jun. Determination of sodium tungstate in the import and export of sodium tungstate content

1 Scope

This standard specifies the method for determination of sodium tungstate content of sodium tungstate in import and export. This standard applies to the determination of the content of sodium tungstate, sodium tungstate in the import and export. Note. The relative molecular mass of sodium tungstate. 329.86 (according to 2007 international relative atomic mass).

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 603 chemical reagent in test methods - Preparations with GB/T 6678 General Principles for Sampling Chemical Products GB/T 6679 General rules for sampling solid chemicals

3 Method summary

Hydrochloric acid and nitric acid decomposition of the sample, so that acid precipitation, hydrochloric acid cinchonine tungsten acid precipitate completely isolated by filtration, sedimentation by burning into WO3 weighed. Calculations to Na2WO4 · H2O or in terms of sodium tungstate WO3 content.

4 Reagents and materials

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or equivalent purity. Test preparation needed And products, in the absence of other provisions prepared according to GB/T 603's. 4.1 HCl. ρ = 1.19g/mL. Nitrate 4.2. ρ = 1.40g/mL. 4.3 hydrochloric acid solution. 13. 4.4 cinchonine hydrochloride solution. 6g 7g cinchonine or cinchonine hydrochloride dissolved in 100mL of hydrochloric acid solution (4.3). 4.5 cinchonine hydrochloride lotion. cinchonine hydrochloride solution (4.4) 4mL added 200mL of water. 4.6 slow quantitative filter paper (203 type). 5. Apparatus 5.1 General laboratory instruments. 5.2 Furnace temperature. The temperature can be controlled at 750 ℃ ± 25 ℃.

6 Sampling

The method according to GB/T 6678 and GB/T 6679 regulations. Batch sampling weight of not less than 500g. The product was sampled thoroughly mixed Uniform, into a clean and dry grinding mouth glass jar or double plastic bags. Label, indicating the sample name, date of sampling, sample number and the like.

7 Procedure

Weigh about 0.5g sample (accurate to 0.2mg), placed on a high type 400mL beaker, was added 10mL of water was dissolved (if insoluble materials should Filtered and washed), was added 20mL of hydrochloric acid (4.1), 10mL of nitric acid (4.2), the beaker was placed on a low-temperature heating furnace to maintain micro-boiling about 10min, remove the beaker was added 150mL of water and 10mL cinchonine hydrochloride solution (4.4), then into a beaker of boiling water bath for 30min ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 0962-2010_English be delivered?

Answer: Upon your order, we will start to translate SN/T 0962-2010_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 0962-2010_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 0962-2010_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.

Question 5: Should I purchase the latest version SN/T 0962-2010?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version SN/T 0962-2010 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.