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General Information Regarding Chemical Resistance

The following information is provided as a general guide for the selection of piping systems subjected to various chemical sub stances. The recommendations stated are based on information provided by our manufacturers, raw material suppliers, and our extensive field experience, and is believed to be reliable. This information is based on one or more of the following: actual chemical immersion testing, chemical structure comparison to substances that have been tested, past field experience, and various other sources.

Numerous variables and environmental factors such as percentage of chemical concentration, combinations of chemical substances, temperature, internal pressure, exposure to the elements, external mechanical stress, and product quality can affect chemical resistance of plastic piping systems when exposed to chemical media. Although extensive research has been conducted over the years to better define use parameters, the possible combinations of chemical mixtures and their resultant reaction when mixed are endless. Therefore the following chemical resistance data is meant to be used as a general guide and is by no means complete. When test data on chemical resistance to particular chemicals under specific operating conditions is not available, Harrington Industrial Plastics LLC. recommends that chemical immersion testing be performed, and if successful, a small test assembly be constructed to test the product under actual use conditions (appropriate care and safety precautions must be followed with all in-service testing and product use). In all cases, a physical test of the material under actual operating conditions is the only way to ensure the success of a particular material for the application.