ASTM D3274 PDF

The visual rating of paint surface disfigurement due to fungal or algal attack is required in order to compare the performance of different coatings. This method may be used to rate interior fungal or algal growth, but it should be noted that the growth patterns on interior surfaces are different than exterior due to the lack of weathering influences. It is primarily intended for test specimens, but can also be sued for rating mildew growth on larger structures such as entire houses. If this is used for large areas, the project should be broken down into smaller sections.

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The visual rating of paint surface disfigurement due to fungal or algal attack is required in order to compare the performance of different coatings. This method may be used to rate interior fungal or algal growth, but it should be noted that the growth patterns on interior surfaces are different than exterior due to the lack of weathering influences. It is primarily intended for test specimens, but can also be sued for rating mildew growth on larger structures such as entire houses.

If this is used for large areas, the project should be broken down into smaller sections. The visual scales are meant to be used by the unaided eye to rate algal, fungal, or dirt disfigurement on larger surface areas such as test panels, siding boards, or entire buildings.

Techniques are included for the differentiation of soil and dirt. Test procedures such as Practices D , D , and G7 are available describing natural exposure tests that can be used to expose paint films, in order to create fungal or algal growth. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents.

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ASTM D3274 Fungal Defacement Rating Method

Historical Version s - view previous versions of standard. More D Because of their dark pigmentation, it is frequently difficult to distinguish fungi from dirt or soil particles. The scale is intended to provide for more discrimination at the earlier stages of fungal or algal growth. It is at these levels that greater discernment is necessary.

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ASTM D3274 - 09(2017)

Active view current version of standard. Other Historical Standards. More D The visual rating of paint surface disfigurement due to fungal or algal attack is required in order to compare the performance of different coatings. This method may be used to rate interior fungal or algal growth, but it should be noted that the growth patterns on interior surfaces are different than exterior due to the lack of weathering influences. It is primarily intended for test specimens, but can also be sued for rating mildew growth on larger structures such as entire houses.

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