GB/T 23595.6-2009 English PDF

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GB/T 23595.6-2009: Test methods of rare earth yellow phosphor for white LED lamps -- Part 6: Determination of conductivity
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23595.6-2009	189	Add to Cart	3 days	Test methods of rare earth yellow phosphor for white LED lamps -- Part 6: Determination of conductivity	Valid

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Basic data

Standard ID: GB/T 23595.6-2009 (GB/T23595.6-2009)
Description (Translated English): Test methods of rare earth yellow phosphor for white LED lamps -- Part 6: Determination of conductivity
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 8,899
Date of Issue: 2009-04-23
Date of Implementation: 2010-02-01
Regulation (derived from): National Standard Approval Announcement 2009 No.5 (Total No.145)
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 440nm ~ 480nm blue LED lights to stimulate white yellow phosphor Determination of rare earth conductivity. This section applies to 440nm ~ 480nm blue light excitation with rare yellow phosphor white LED lights conductivity measurement. Measuring range: 0��S/cm ~ 100��S/cm.

GB/T 23595.6-2009: Test methods of rare earth yellow phosphor for white LED lamps -- Part 6: Determination of conductivity

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Test methods of rare earth yellow phosphor for white LED lamps Part 6. Determination of conductivity ICS 77.120.99 H14 National Standards of People's Republic of China Test methods of rare earth yellow phosphor white LED lamp Part 6. Determination of conductivity Posted 2009-04-23 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 23595-2009 "white LED light rare earth yellow phosphor Test Method" is divided into six parts. --- Part 1. Determination of the spectral properties; --- Part 2. Determination of relative brightness; --- Part 3. Determination of chromaticity coordinates; --- Part 4. Determination of thermal stability; --- Part 5. Determination of pH; --- Part 6. Determination of electrical conductivity. Part is divided into 6 sections. This part of the National Standardization Technical Committee rare and centralized. This section is Xiamen Topstar New Materials Co., Ltd. is responsible for drafting. This section from Hangzhou Daming Fluorescent Material Co., Ltd. Changshu City, the Asia-Pacific fluorescent material, Jiangmen City Branch Hang Industrial Company Limited Division is responsible for drafting. The main drafters of this section. Lan Wei, Han Jun Xiang, Daisy Ling, Wang Chunjian. The drafters of some of the participants. He Haiyan, Gu Guohua, Huang Rui sweet. Test methods of rare earth yellow phosphor white LED lamp Part 6. Determination of conductivity

1 Scope

This section provides 440nm ~ 480nm blue light excitation white LED measurement method using rare earth yellow phosphor conductivity. This section applies to 440nm ~ 480nm blue light excitation measurement of electric conductivity of rare earth yellow phosphor white LED lights. Determination Fan Wai. 0μS/cm ~ 100μS/cm.

2 principle of the method

Under certain ambient temperature, the solution is directly proportional to the ion concentration and conductivity.

3 Instruments and reagents

3.1 Deionized water. Conductivity ≤2μS/cm. 3.2 Balance. Precision 0.001g. 3.3 Conductivity Meter. Measuring range 0μS/cm ~ 1000μS/cm, with temperature compensation, precision ± 0.2μS/cm. 3.4 plastic beaker. 50mL. 3.5 magnetic stirrer. power ≤90W, adjustable speed timing. 3.6 Magnetic sub. about 25mm. 3.7 Pipette. 20mL.

4 Test Procedure

4.1 Production Solution 4.1.1 Using an analytical balance (3.2) weigh the sample into 2g 50mL plastic beakers (3.4), and with a pipette (3.7) was added 20mL of deionized water (3.1), into a length of about 25mm magnetic sub (3.6), cover the slides. 4.1.2 The beaker containing the sample and water on a magnetic stirrer (3.5) After stirring 20min standing on stratification. 4.1.3 clear liquid upper layer was removed, was measured. 4.2 Test 4.2.1 Instrument Calibration. according to manufacturer's instructions prescribed method to calibrate the instrument. 4.2.2 Setting the cell constant and temperature compensation coefficient. 4.2.3 The temperature sensor and an electrode to be immersed in the sample with deionized water, shaking the liquid, read deionized water conductivity (δO) steady. 4.2.4 The temperature sensor and the electrode in the sample solution, shaking the liquid, when the display is stable, read the solution conductivity (δS).

5 Test results are expressed

5.1 conductivity of the sample solution (δ) according to equation (1). δ = δS-δO (1) Where. ΔS --- conductivity of the solution, in units of μS/cm; δO --- Deionized water conductivity, unit μS/cm. 5.2 Sample test three times in a row, the mean value. When δ≤20μS/cm, the poor value ≤2μS/cm; when 20μS/cm < δ≤ ......

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