ISO 18787:2017
ISO 18787:2017 Foodstuffs – Determination of water activity
CDN $124.00
Description
ISO 18787:2017 establishes basic principles and specifies requirements for the methods of determining water activity (aw) of food products for human consumption and animal feed within a measurement range of 0 to 1.
The measurement principles are based on the dew-point measurement or on the determination of the change in electrical conductivity of an electrolyte or in the permittivity of a polymer.
The method does not apply to products stored below their freezing point (equivalent to the temperature at which ice crystals appear in the product), neither to products corresponding to a water-in-fat emulsion, nor to crystal products such as sugars, salt or minerals.
For products containing volatile compounds, such as alcohols, specific equipment adaptations may be necessary to apply the method.
The results of the interlaboratory studies that were carried out are given in Annex B.
Edition
1
Published Date
2017-11-28
Status
PUBLISHED
Pages
9
Language
English
Format
Secure PDF
Secure – PDF details
- Save your file locally or view it via a web viewer
- Viewing permissions are restricted exclusively to the purchaser
- Device limits - 3
- Printing – Enabled only to print (1) copy
See more about our Environmental Commitment
Abstract
ISO 18787:2017 establishes basic principles and specifies requirements for the methods of determining water activity (aw) of food products for human consumption and animal feed within a measurement range of 0 to 1.
The measurement principles are based on the dew-point measurement or on the determination of the change in electrical conductivity of an electrolyte or in the permittivity of a polymer.
The method does not apply to products stored below their freezing point (equivalent to the temperature at which ice crystals appear in the product), neither to products corresponding to a water-in-fat emulsion, nor to crystal products such as sugars, salt or minerals.
For products containing volatile compounds, such as alcohols, specific equipment adaptations may be necessary to apply the method.
The results of the interlaboratory studies that were carried out are given in Annex B.
Previous Editions
Can’t find what you are looking for?
Please contact us at:
Related Documents
-
ISO 20224:2020 Molecular biomarker analysis – Detection of animal-derived materials in foodstuffs and feedstuffs by real-time PCR – Part 2: Ovine DNA detection method
CDN $186.00 Add to cart -
ISO 20224:2024 Molecular biomarker analysis – Detection of animal-derived materials in foodstuffs and feedstuffs by real-time PCR – Part 10: Duck DNA detection method
CDN $251.00 Add to cart -
ISO 21569:2016 Horizontal methods for molecular biomarker analysis – Methods of analysis for the detection of genetically modified organisms and derived products – Part 6: Real-time PCR based screening methods for the detection of cry1Ab/Ac and Pubi-cry DNA sequences
CDN $124.00 Add to cart -
ISO 16578:2022 Molecular biomarker analysis – Requirements for microarray detection of specific nucleic acid sequences
CDN $186.00 Add to cart
