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GB/T 29642-2013: Rubber seals -- Method for extraction by using water
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 29642-2013 | English | 189 |
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Rubber seals -- Method for extraction by using water
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GB/T 29642-2013
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Basic data | Standard ID | GB/T 29642-2013 (GB/T29642-2013) | | Description (Translated English) | Rubber seals -- Method for extraction by using water | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G43 | | Classification of International Standard | 83.140.50 | | Word Count Estimation | 8,873 | | Quoted Standard | GB/T 5750.11-2006; GB/T 6682; GB 9985 | | Regulation (derived from) | National Standards Bulletin 2013 No. 17 | | 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: contact with water area than in 20cm2/L or less rubber seal products water extract preparation. This standard applies to: water pipe rubber seal products with physical and chemical testing of water quality water extract Preparatio | GB/T 29642-2013: Rubber seals -- Method for extraction by using water---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.
Rubber seals. Method for extraction by using water
ICS 83.140.50
G43
National Standards of People's Republic of China
Rubber seal products flooding the preparation of liquid
Issued on. 2013-09-06
2014-01-31 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Rubber and rubber products Standardization Technical Committee (SAC/TC35) centralized.
This standard is mainly drafted by. Northwest Rubber Plastic Research and Design Institute, People's Republic of China Putian CIQ.
The main drafters of this standard. Tongyu Gui, Chen Qin Jian, Cao Yuanli, forest, Fu Junyuan, Fang Guangwei, Huang Ping, Yan Zhihua, Zheng Zhiming.
Rubber seal products flooding the preparation of liquid
1 Scope
This standard specifies a method for preparing the area of \u200b\u200bcontact with water in the ratio of 20cm2/L or less rubber seal products flooding the liquid.
This standard applies to water pipe rubber seal products with physical and chemical testing of water quality flooding preparation liquid.
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 5750.11-2006 Standard examination methods for drinking water disinfectants Index
Laboratory use specifications and test methods GB/T 6682 Analysis
GB 9985 hand dishwashing detergents
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Soaking water aqueoussolutionforextractiontest
Formulated as an aqueous solution according to the method prescribed requirements for sample water leaching test.
3.2
Leachate extractsolution
Samples were obtained by flooding after the test sample solution.
4 Reagents and Instruments
4.1 Overview. Unless otherwise specified, water as a water GB/T 6682 regulations, reagents were of analytical grade. Test appliance shall be tested items
Objective requires clean; microbiological tests must be pre-sterilized containers used during the test should be taken to prevent microbial contamination.
4.2 plug Erlenmeyer flask, 1000mL.
4.3 cylinder, 500mL.
4.4 water bath oscillator, temperature control accuracy of 1 ℃, can cyclotron oscillations, with cover.
4.5 glass funnel, 100mL.
4.6 chlorine stock solution. Take 7.3mL sodium hypochlorite solution (5% NaClO), diluted with water to 200mL, stored in a sealed brown bottle with stopper
In, 20 ℃ stored. According to GB/T 5750.11-2006 in 2.1.5.3 ~ 2.1.6 Step calibrated and calculated chlorine content,
Value is designated as "A". Validity of the week.
NOTE. chlorine content of chlorine in this way prepared stock solution was about 0.086% (0.86mg/mL).
4.7 chlorine solution (2.0mg/L). Take appropriate volume of chlorine stock solution (4.6), diluted with water to the required volume. We need access to chlorine reserve
The amount of liquid, according to equation (1).
V = 2.0 × B/A (1)
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