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Chinese Standard: GB/T 23490-2009e

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Determination of water activity in foods

Standard in brief 
Scope of Application:
This standard specifies the methods for determining water activity in food using the Conwell dish diffusion method and the water activity meter diffusion method.
This standard applies to the determination of water activity in prepackaged cereal products, meat products, aquatic products, honey products, potato products, fruit products, vegetable products, milk powder, and solid beverages.
This standard does not apply to frozen foods and foods containing volatile components.
The Conwell dish diffusion method in this standard is applicable to a water activity range of 0.00 to 0.98, and the water activity meter diffusion method is applicable to a range of 0.60 to 0.90.

Basic information
Standard No:  GB/T 23490-2009e
Standard Name:食品水分活度的测定
English Name:Determination of water activity in foods
Standard Status:Replaced
Release Date:2009-04-27 
Effective Date:2009-05-01
Language of Publication:English

Associated Standard
Be replaced by the following standard:GB 5009.238-2016

Publication Information
Number of pages:12
Number of words:11 K

Other Information
Technical Committees:Sub-Committee on General Testing Methods for Food Products of the

                                         National Technical Committee on Food Industry of Standardization

                                         Administration of China (SAC/TC 64/SC 8)
             Proposed Unit:National Technical Committee on Food Industry of Standardization

                                         Administration of China (SAC/TC 64)
         Application Dept:General Administration of Quality Supervision, Inspection and Quarantine
                                         of the People's Republic of China、
                                         Standardization Administration of China

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