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YS/T 254.7-2011 English PDF

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Q: Should I purchase the latest version YS/T 254.7-2011?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version YS/T 254.7-2011 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$159.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
YS/T 254.7-2011: Methods for chemical analysis of beryllium concentrate and beryl. Part 7: Determination of water content. Gravimetric method
Status: Valid

YS/T 254.7: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 254.7-2011	159	Add to Cart	3 days	Methods for chemical analysis of beryllium concentrate and beryl. Part 7: Determination of water content. Gravimetric method	Valid
YS/T 254.7-1994	199	Add to Cart	2 days	Methods for chemical analysis of beryllium concentrates-beryl The gravimetric method for the determination of water content	Obsolete

Similar standards

YS/T 254.1 GB/T 27682 GB/T 17413.1 YS/T 254.8 YS/T 254.2

Basic data

Standard ID: YS/T 254.7-2011 (YS/T254.7-2011)
Description (Translated English): Methods for chemical analysis of beryllium concentrate and beryl. Part 7: Determination of water content. Gravimetric method
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: D43
Classification of International Standard: 73.060
Word Count Estimation: 6,695
Date of Issue: 2011-12-20
Date of Implementation: 2012-07-01
Older Standard (superseded by this standard): YS/T 254.7-1994
Regulation (derived from): ?MIIT Announcement 2011 No.43
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the beryllium ore, determination of the amount of moisture in beryl. This standard applies to beryllium ore, determination of the amount of moisture in beryl. Measuring range: 0. 10% to 20. 0%.

YS/T 254.7-2011: Methods for chemical analysis of beryllium concentrate and beryl. Part 7: Determination of water content. Gravimetric 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.
Methods for chemical analysis of beryllium concentrate and beryl.Part 7. Determination of water content.Gravimetric method ICS 73.060 D43 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 254.7-1994 Beryllium ore, beryl chemical analysis Part 7. Determination of moisture content - Gravimetric method Part 7. Determinationofwatercontent- Issued on. 2011-12-20 2012-07-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 254 "of beryllium ore, beryl chemical analysis method" is divided into seven parts. --- Part 1. Determination of the amount of beryllium oxide phosphate gravimetric method; --- Part 2. iron oxide contents - EDTA titration sulfosalicylic acid spectrophotometric method; --- Part 3. Determination of phosphorus content Molybdovanadophosphoric acid spectrophotometry; --- Part 4. Determination of the amount of lithium oxide flame atomic absorption spectrometry; --- Part 5. Determination of the amount of fluorine ion selective electrode method; --- Part 6. Determination of calcium oxide content by flame atomic absorption spectrometry; --- Part 7. moisture content - Gravimetric method. This section YS/T 254 Part 7. The partial replacement of YS/T 254.7-1994 "beryllium concentrates - beryl gravimetric method for chemical analysis of water content determination" (formerly GB/T 5870.6-1986). Section compared with YS/T 254.7-1994 The main changes are as follows. --- Increased repeatability terms; --- Text format has been re-edited, an increase of quality assurance and control provisions. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is drafted. Shuikoushan Hunan Nonferrous Metals Group Co., Ltd., Xinjiang Institute of non-ferrous metals, Xinjiang Alashankou Importers Inspection and Quarantine Bureau. The main drafters of this section. Li Qingchun, Xie Yi Bin Guan Yuzhen, Wang Hongchuan, had He Hua. This part of the standard replaces the previous editions are. --- GB/T 5870.7-1986, YS/T 254.7-1994. Beryllium ore, beryl chemical analysis Part 7. Determination of moisture content - Gravimetric method

1 Scope

This section YS/T 254 provisions of the beryllium ore, beryl determination of moisture content. This section applies to beryllium ore, beryl measured moisture content was measured in the range of 0.10% to 20.0%.

2 Method summary

In mineral water and rocks exist in two forms, namely, the adsorption of water and combined water. The method for determining the moisture adsorption. This kind Water lost at 105 ℃ ~ 110 ℃ drying. Quality can be obtained according to the amount of change in the sample adsorb water.

3 Instrument

Ovens.

4 Sample

The specimen shall 2.00mm sieve through the aperture. Step 5 Analysis 5.1 Sample Weigh 20.00g samples, accurate to 0.0001g. 5.2 Determination of the number of Independent secondary measurement averaged. 5.3 Determination A sample (5.2) into a constant diameter 7cm weight of weighing bottle grinding mouth, opened the lid, at 105 ℃ ~ 110 ℃ drying 2h, removed, Close the lid and placed in a desiccator to cool to room temperature and weighed. Repeat each baking 1h, referred to constant weight.

6 Calculation of analytical results

The moisture content in mass fraction of moisture wH2O and its value is expressed in% according to equation (1). wH2O = m1-m2 m0 × 100 (1) Where. Mass m1 --- sample before drying and weighing bottles in grams (g); ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of YS/T 254.7-2011_English be delivered?

Answer: Upon your order, we will start to translate YS/T 254.7-2011_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 YS/T 254.7-2011_English with my colleagues?

Answer: Yes. The purchased PDF of YS/T 254.7-2011_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 YS/T 254.7-2011?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version YS/T 254.7-2011 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.