Heico Permawash is a hypo clearing agent that eliminates hypo so effectively that rinse water volume can be reduced as much as 90%. At the same time, Perma Wash ensures archival permanence in films and papers.
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Available in 1 quart size or larger 1 gallon size is available by special order. Perma Wash is non-corrosive and is formaldehyde free.
Heico Permawash SDS