GB/T 23490-2009 English PDFUS$319.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 23490-2009: Determination of water activity in foods Status: Obsolete
Basic dataStandard ID: GB/T 23490-2009 (GB/T23490-2009)Description (Translated English): Determination of water activity in foods Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: X04 Classification of International Standard: 67.040 Word Count Estimation: 8,837 Date of Issue: 2009-04-27 Date of Implementation: 2009-05-01 Quoted Standard: GB/T 6682 Adopted Standard: ISO 21807-2004, NEQ Regulation (derived from): National Standard Approval Announcement 2009 No.3 (Total No.143) 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 water activity meter diffusion method-Determination of water activity. This standard applies to pre-packaged grain products category, meat category, aquatic products category, bee class, potato products category, fruit products category, vegetable products category, determination of solid food drink water activity, milk. GB/T 23490-2009: Determination of water activity in foods---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.Determination of water activity in foods ICS 67.040 X04 National Standards of People's Republic of China Determination of water activity (ISO 21807.2004, Microbiologyoffoodandanimalfeeding stuffs-Determinationofwateractivity, NEQ) Posted 2009-04-27 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis corresponds to the standard ISO 21807. "food and livestock feed microorganisms in water activity measurement" (in English), 2004 standard And ISO 21807.2004 is equivalent to the degree of non-conformity. Appendix A of this standard is an informative annex. This standard by the National Food Industry Standardization Technical Committee (SAC/TC64) proposed. This standard by the National Standardization Technical Committee on Food Universal Detection Technology Food Industry Technical Committee (SAC/TC64/SC8) Centralized. This standard was drafted. Hangzhou Quality and Technical Supervision and Inspection Institute. The main drafters of this standard. Jiang Netherlands, Zhiguo, Rui Chang, SUN Lan, Chen Yuwang, Hang Hu Ping. Determination of water activity1 ScopeThis standard specifies the determination of water activity food dish Kang Weishi diffusion and water activity meter diffusion method. This standard applies to pre-packaged grain products category, meat, aquatic products category, type of bee products, potato products, fruit products, vegetables Class products, milk powder, solid drink food water activity measurement. This standard does not apply to frozen foods and containing volatile components. The scope of the standard of Kang Weishi diffusion method is suitable for food dish water activity of 0.00 to 0.98; water activity meter diffusion method was 0.60 ~ 0.90.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)3 Terms and DefinitionsThe following terms and definitions apply to this standard. 3.1 Water activity The ratio of saturated vapor pressure of water at the same temperature and water vapor pressure of the food product. Note. The water activity (A w1) Available formula (1). (1) Where.4 Kang Weishi dish diffusion method4.1 Method summary Seal, thermostat Kang Weishi dish, sample free water and water activity (A w1) lower and higher standard solution saturated with each other to expand Casual, balance, based on the amount of change of the sample mass, determined water activity of the sample. 4.2 Reagents 4.2.1 All reagents were analytical grade use; analysis of water should comply with three water specifications GB/T 6682 regulations. 4.2.2 Table 1 formulated in a saturated solution of various inorganic salts. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 23490-2009_English be delivered?Answer: Upon your order, we will start to translate GB/T 23490-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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