GB/T 14634.6-2010 English PDF

US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 14634.6-2010: Test methods of rare earth three-band phosphors for fluorescent lamps -- Part 6: Determination of specific surface area
Status: Valid

GB/T 14634.6: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14634.6-2010	139	Add to Cart	3 days	Test methods of rare earth three-band phosphors for fluorescent lamps -- Part 6: Determination of specific surface area	Valid
GB/T 14634.6-2002	319	Add to Cart	3 days	Test methods of rare earth three-band phosphors for fluorescent lamps -- Determination of specific surface area	Obsolete

Similar standards

GB/T 14635   GB/T 15076.3   GB/T 15076.1   GB/T 14634.3   GB/T 14634.5   GB/T 14634.2   

Basic data

Standard ID: GB/T 14634.6-2010 (GB/T14634.6-2010)
Description (Translated English): Test methods of rare earth three-band phosphors for fluorescent lamps -- Part 6: Determination of specific surface area
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 6,611
Date of Issue: 2010-08-09
Date of Implementation: 2011-05-01
Older Standard (superseded by this standard): GB/T 14634.6-2002
Regulation (derived from): National Standard Approval Announcement 2010 No.3 (Total No.158)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method for measuring light rare earth trichromatic phosphor specific surface area. This section applies to light rare earth trichromatic phosphor surface area determination.

GB/T 14634.6-2010: Test methods of rare earth three-band phosphors for fluorescent lamps -- Part 6: Determination of specific surface area

---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.
Test methods of rare earth three-band phosphors for fluorescent lamps Part 6. Determination of specific surface area ICS 77.120.99 H14 National Standards of People's Republic of China Replacing GB/T 14634.6-2002 Test methods of rare earth trichromatic phosphor lamps Part 6. Determination of the specific surface area Part 6. Determinationofspecificsurfacearea Issued on. 2010-08-09 2011-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 14634 "light rare earth trichromatic phosphors Test Method" is divided into seven sections. --- Part 1. Determination of relative brightness; --- Part 2. Determination of emission peak and color performance; --- Part 3. Determination of thermal stability; --- Part 4. Electric sensing particle size distribution measurement; --- Part 5. Determination of density; --- Part 6. Determination of specific surface area; --- Part 7. Determination of thermal quenching. Part is divided into 6 sections. The partial revision of GB/T 14634.6-2002 "light rare earth trichromatic phosphors Test Method for Determination of specific surface area," the. This section compared with the GB/T 14634.6-2002, the main changes are as follows. --- Adjust some analysis condition; --- Increasing the precision of the terms, adjusted the allowable difference; --- Standard text made editorial changes. Appendix A of this section is an informative annex. This part of the National Standardization Technical Committee rare and centralized. This section is responsible for drafting units. Jiangmen City Branch Hang Industrial Co., Ltd.. Participated in the drafting of this section. Shaanxi Rainbow Fluorescent materials company, Shanghai Yuelong New Material Co., Limited Hangzhou Daming fluorescent material The company, Xiamen Topstar New Materials Co., Ltd. The main drafters of this section. IWC Jiang, Huang Rui sweet, Luger Hill. The drafters of some of the participants. Wang Wu Po, Zhang Fei, He Haiyan, Daisy Ling. This part of the standard replaces the previous editions are. --- GB/T 14634.6-2002. Test methods of rare earth trichromatic phosphor lamps Part 6. Determination of the specific surface area

1 Scope

GB/T 14634 provisions of this part of the measurement method using light rare earth trichromatic phosphor surface area. This section applies to light rare earth trichromatic phosphor surface area measurement.

2 principle of the method

At a certain temperature, the laminar flow of air through the time required for a certain thickness of the powder bed and the surface area ratio of the powder into a certain functional relationships system. The amount of air flowing into a certain thickness of the powder bed is changing the flow rate for the time integral of the results. The air through the powder bed Time to the specific surface area of \u200b\u200bpowder.

3 instruments and apparatus

3.1 surface area analyzer (see Figure 1). 3.2 Balance. Precision 0.001g. 3.3 Determination of instrument constant K 3.3.1 Weigh phosphors standard sample (m0), accurate to 0.01g. Weigh the amount of porosity so that a standard sample (e0) in an appropriate range tightness Between, see equation (1). 3.3.2 In the bottom of the sample chamber into the first multi-well round copper, filter paper and then placed in a multi-hole circle with a diameter of copper, and copper in close agreement. figure 1 ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 14634.6-2010_English be delivered?

Answer: Upon your order, we will start to translate GB/T 14634.6-2010_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 GB/T 14634.6-2010_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 14634.6-2010_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 GB/T 14634.6-2010?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14634.6-2010 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.