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Old 26th March 2021, 09:42 AM
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Bob Bob is offline
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Hi.

That is a hypo eliminator formula. It is not recommended to use this except in very specific circumstances where you need to remove *all* fixer residue from a print or film - doing so actually reduces the lifespan of the material. It was quite popular back in the day, but is rarely used with modern materials.

If you wish to reduce washing times, use hypo clearing agent. This is a different concept that uses sodium sulfite (approx 20g per litre of water) to make the fixer ("hypo") residue rinse out of the paper more readily. Exact times depend on how you fixed the paper: fresh fixer at 1+4 dilution means a 1 minute fix, then 1 minute rinse followed by at least 5 minutes in the hypo-clear, followed by a final 10 minute wash (all washes in running water). Weaker fixer will require longer times as the longer time required in the fixer means more of it soaks into the paper.

This is only recommended for traditional Baryta and other papers that are not resin-coated. RC papers wash in a couple of minutes as the paper does not absorb the fixer so hypo-clear is not useful. Film also washes quickly without it, so it is rarely used for film.

Last edited by Bob; 26th March 2021 at 09:45 AM.
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