OS GSO ISO 846:2015
Omani Standard
Current Edition
·
Approved on
03 September 2015
·
Plastics -- Evaluation of the action of microorganisms
OS GSO ISO 846:2015 Files
English
22 Pages
Current Edition
Reference Language
58.88 OMR
OS GSO ISO 846:2015 Scope
This International Standard specifies methods for determining the deterioration of plastics due to the action of fungi and bacteria and soil microorganisms. The aim is not to determine the biodegradability of plastics.
The type and extent of deterioration may be determined by
a) visual examination
and/or
b) changes in mass
and/or
c) changes in other physical properties.
The tests are applicable to all articles made of plastic that have an even surface and that can thus be easily cleaned. The exceptions are porous materials, such as plastic foams.
This International Standard uses the same test fungi as IEC 68-2-10. The IEC method, which uses so-called "assembled specimens", calls for inoculation of the specimens with a spore suspension, incubation of the inoculated specimens and assessment of the fungal growth as well as any physical attack on the specimens.
The volume of testing and the test strains used will depend on the application envisaged for the plastic. These parameters should therefore be agreed upon before the tests and should be stated in the test report.
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