ASTM D2203-01 (R2018) PDF Download

The ASTM D2203-01 (R2018) standard is a test method used to evaluate the likelihood of a sealant causing an early stain on a porous substrate when the stain is caused by gross exudation from the sealant. Staining on a building is considered aesthetically undesirable, and this test method helps to determine if a sealant will cause such staining on materials like masonry, concrete, or stone (marble, limestone, sandstone, granite, etc.). It should be noted that this test method does not predict staining caused by other factors.

The standard specifies a laboratory procedure for conducting the test, and the values stated in SI (metric) units are considered the standard, with values given in parentheses provided for information only. It is also highlighted in the standard that there is currently no ISO standard similar to this test method.