GB/T 21831-2008 English PDFUS$254.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21831-2008: Testing of chemicals -- Ready biodegradability: Closed bottle test Status: Valid
Basic dataStandard ID: GB/T 21831-2008 (GB/T21831-2008)Description (Translated English): Testing of chemicals -- Ready biodegradability: Closed bottle test Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: A80 Classification of International Standard: 13.300; 13.020.40 Word Count Estimation: 13,197 Date of Issue: 2008-05-12 Date of Implementation: 2008-09-01 Adopted Standard: OECD No.301D-1992, IDT Regulation (derived from): Announcement of Newly Approved National Standards 2008 No. 8 (No. 121 overall) 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 chemical fast Biodegradability: Closed Bottle method test method overview, test preparation, test procedures, quality assurance and quality control, data and reports. This standard applies to test a water-soluble or water- insoluble, non -volatile, volatile or chemical adsorption rapid biodegradability. GB/T 21831-2008: Testing of chemicals -- Ready biodegradability: Closed bottle test---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.Testing of chemicals Ready biodegradability. Closed bottle test ICS 13.300; 13.020.40 A80 National Standards of People's Republic of China Chemicals biodegradability. Closed bottle test Posted 2008-05-12 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard is identical with the Organisation for Economic Co-operation and Development (OECD) guidelines for testing of chemicals No. 301D (1992 Nian) "closed bottle test" (In English). This standard made the following editorial changes. --- The units of measurement to our legal units of measurement. The Standard Appendix A, Appendix B, Appendix C, Appendix D and Appendix E is an informative annex. This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points. This standard is drafted by. Environmental Protection Department of Chemical Registration Center. Participated in the drafting of this standard. Ministry of Environmental Protection, Nanjing Institute of Environmental Sciences, Shanghai Academy of Environmental Sciences, Shenyang Chemical Research Institute Safety Evaluation Center. The main drafters of this standard. Sun Jin industry, the new Liu Chun Hou Lin, Liu Jining, Shi Lili, Shen root Xiang, Yang Hairong. Chemicals biodegradability. Closed bottle test1 ScopeThis standard specifies the chemical biodegradability. Closed bottle test method overview, test preparation, test procedures, quality assurance And quality control, data and reports. This standard applies to quick biological test water-soluble or poorly water-soluble, non-volatile, or adsorption of volatile chemicals Degradation.2 Terms and definitionsThe following terms and definitions apply to this standard. 2.1 Test substance exhibiting a limited time in contact with the inoculum biodegradability. 2.2 The amount of oxygen consumed by the microbial decomposition of organic matter, can be expressed as the number of milligrams of oxygen (mg/mg) of the test substance consumed per milligram. 2.3 In strong acid and heating conditions, a certain amount of dichromate oxidation of reducing substances in water samples of the amount of oxidant consumed, can be expressed as millimoles per Oxygen milligrams (mg/mg) g of the test substance consumed. 2.4 Calculated according to the formula of the total amount of the test substance is completely oxidized oxygen required, it can be expressed as oxygen consumption per mg of the test substance in mg The number of grams (mg/mg). 2.5 Start of the test to the degradation rate of 10% of the period. 2.6 10d test time biodegradation rate of 10% after. 2.7 Standstill period to the end of the degradation rate of 90% of the maximum degradation rate of the period.3 test substance informationa) the formula; b) solubility in water; c) vapor pressure; ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21831-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 21831-2008_English as soon as possible, and keep you informed of the progress. 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