http://www.powerbrushes.com/chemicals.html (http://www.powerbrushes.com/chemicals.html)
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This chart is availible from many sites on the web.
Some versions are easier to read than others.
Covers most common materials and many chemicals.
[http://www.iaecs.com/crc1.html (http://www.iaecs.com/crc1.html)
]
Other versions can be found by searching for,
( little giant pump chemical resistance )