Allerair Air Cleaners Air Purifiers Air Scrubbers Air Filtration Systems
DOP Testing
Originally intended for the production testing of Absolute (HEPA) filters, this test - generally referred to as a DOP (Di-Octyl Phthalate) test, introduces an exceedingly dense cloud of sub-micronic particulate into the dirty side of the filter under test.
(Because of concern that Di-Octyl Phthalate may have carcinogenic properties, it has been replaced by an alternative product, although the abbreviated name has been retained - now signifying Dispersed Oil Particulate.)
The clean side is then viewed against a (preferably) dark background, where the slightest seepage of smoke can be clearly observed, so that even the most minute leakage can be dealt with.
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