What is ISO 846-Evaluate the action of microorganisms on plastics about?
ISO 846 discusses plastics. ISO 846 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 or the deterioration of natural fiber composites.
ISO 846 The type and extent of deterioration can be determined by
- visual examination and/or
- changes in mass and/or
- changes in other physical properties.
ISO 846 is applicable to all plastics that have an even surface and that can thus be easily cleaned. The exceptions are porous materials, such as plastic foams.
Who is ISO 846- Evaluate the action of microorganisms on plastics for?
ISO 846 on evaluating the action of microorganisms on plastics is useful for:
- Plastic manufactures
- Quality control personnel
- Plastic testing laboratories
Why should you use ISO 846- Evaluate the action of microorganisms on plastics?
Under certain climatic and environmental conditions, microorganisms can settle on and colonize the surface of plastics or plastics products. Their presence and/or their metabolic products might not only damage the plastic itself but can also affect the serviceability of building materials and systems containing plastic parts.
The actions of microorganisms on plastics are influenced by two different processes.
- Direct action: the deterioration of plastics which serve as a nutritive substance for the growth the microorganisms.
- Indirect action: the influence of metabolic products of the microorganisms, e.g., discoloration or further deterioration.
ISO 846 provides you with both processes as well as their combined action.
ISO 846 provides you terms and definitions for the functionality of determining the deterioration of plastics due to the action of fungi and bacteria and soil microorganisms. ISO 846 guides you with the apparatus, materials, and test specimens required for the test. ISO 846 provides you necessary guidance in the preparation of test specimens and procedures for the test. ISO 846 also guides you with the assessment and expression of results. ISO 846 helps you to evaluate the action of microorganisms on plastics and helps you to manufacture high-quality plastic.
