GB/T 11446.9-2013 PDF English
US$120.00 · In stock · Download in 9 secondsGB/T 11446.9-2013: Test method for particles in electronic grade water by instrument Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 11446.9: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 11446.9-2013 | English | 120 |
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Test method for particles in electronic grade water by instrument
| Valid |
| GB/T 11446.9-1997 | English | 199 |
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Test method for particles in electronic grade water by instrument
| Obsolete |
| GB 11446.9-1989 | English | 199 |
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Test method for particles in electronic grade water by instrument
| Obsolete |
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GB/T 11446.9-2013: Test method for particles in electronic grade water by instrument---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT11446.9-2013
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 31-030
L 90
Replacing GB/T 11446.9-1997
Test method for particles in electronic grade water by
instrument
Issued on. DECEMBER 31, 2013
Implemented on. AUGUST 15, 2014
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Principles of the method... 5
5 Disturbing factors... 6
6 Reagents... 6
7 Measuring instruments... 7
8 Operation procedures... 7
9 Calculation of measurement results... 7
10 Error analysis... 8
11 Report... 8
Foreword
The expected structure of GB/T 11446 is as follows.
- GB/T 11446.1 Electronic grade water;
- GB/T 11446.2 (To be determined);
- GB/T 11446.3 Generic rules for test methods of electronic grade water;
- GB/T 11446.4 Test method for resistivity of electronic grade water;
- GB/T 11446.5 Test method for measuring trace metals in electronic grade
water by atomic absorption spectrophotometry;
- GB/T 11446.6 Test method for SiO2 in electronic grade water by
spectrophotometer;
- GB/T 11446.7 Test method for trace anion in electronic grade water by ion
chromatography;
- GB/T 11446.8 Test method for total organic carbon in electronic grade water;
- GB/T 11446.9 Test method for particles in electronic grade water by
instrument;
- GB/T 11446.10 Test method for total bacterial count in electronic grade
water by membrane filters.
This part is Part 9 of GB/T 11446.
This part was drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 11446.9-1997 "Test method for particles in electronic
grade water by instrument".
Compared with GB/T 11446.9-1997, this Part mainly has the following changes.
- REDEFINE "3.1 Particle" (see Chapter 3);
- ADD "5 Disturbing factors" (see Chapter 5);
- DELETE "11 Precautions" (see Chapter 11 of the 1997 edition);
- MODIFY the definition of Pi.
This Part was proposed by the Ministry of Industry and Information Technology
of the People's Republic of China.
This Part shall be under the jurisdiction of China Electronics Standardization
Institute.
Drafting organizations of this Part. Special Material Quality Supervision and
Inspection Center of the Ministry of Information Industry, Institute of
Semiconductors of Chinese Academy of Sciences, China Electronics
Standardization Institute, 46th Research Institute of China Electronics
Technology Group Corporation.
The main drafters of this Part. Wang Yi, Chu Lianqing, He Xiukun, Duan
Shuguang, Ti Liuwang, Liu Yun.
This standard replaces the standard previously issued as follows.
- GB/T 11446.9-1989, GB/T 11446.9-1997.
Test method for particles in electronic grade water by
instrument
1 Scope
This Part of GB/T 11446 specifies the instrumental method for the determination
of particles, in electronic grade water.
This Part applies to the continuous or single detection and counting of particles,
in electronic grade water. The measured particle size is not less than 0.05 μm;
the concentration range of the particles is 0 ~ 10000 pcs/mL.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) is applicable to this standard.
GB/T 11446.1-2013 Electronic grade water
3 Terms and definitions
The terms and definitions as defined in GB/T 11446.3-2013, as well as the
following terms and definitions, apply to this document.
3.1
Particle
Granular, gas removed, non-liquid substance, which is non-uniformly
dispersed in water.
4 Principles of the method
A focused laser beam is incident perpendicular to the direction of the water
sample flow. The particles in the water will produce a light scattering effect. The
intensity of the scattered light has a certain relationship, with the size of the
particles. The scattered light focuses on the photomultiplier, through the
collecting lens, at which the light signal is converted into electrical pulse.
5 Disturbing factors
5.1 The factors, such as sampling process; pollution of the container,
environment and detection chamber; bubbles in the water and vibration of the
measurement process; changes in water flow speed, etc.,
5.2 The ambient temperature affects the stability of the analysis results. The
temperature of the laboratory and the environment shall be between 10 °C and
30 °C.
5.3 Whether the instrument is normal or not, directly affects the measurement
result. Therefore, it shall be calibrated, in accordance with the calibration cycle,
which is specified in China, when it is used.
6 Reagents
6.1 Blank water. EW-I electronic grade water, which is specified in GB/T
Microcomputer
7 Measuring instruments
A laser-scattering type submicron liquid particle counting and detecting
instrument, which has a microcomputer.
8 Operation procedures
8.1 Preparation before instrument test
Turn on the power, according to the instrument's instructions, to make the
instrument enter the ready-to-work state.
8.2 Test method
8.2.1 Continuous sampling
First use the degreasing detergent, to clean the pipe. Then lead in EW-I
electronic grade water, to rinse it for 30 minutes. Perform the test, according to
the operating rules of the continuous test of the instrument.
9 Calculation of measurement results
Calculate the particle number concentration, according to formula (1).
10 Error analysis
The relative deviation of this method is less than 20%.
11 Report
The test report shall be prepared, according to the format, which is given in
GB/T 11446.3-2013.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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