Formulary Fixer (concentrate) and hardener question

[ericmaquiling]

I have the Formulary TF-4 fixer at home without hardener. I wanna mix a seperate batch with hardener. Problem is, I happen to have Heico hardener at home, but no longer have Heico fixer.

Can I use this hardener with the Forumlary product?

[Drew Wiley]

You can post harden. You'd probably need to rinse well in between. But how long? Just call or e-mail em.

[stawastawa]

You can post harden. You'd probably need to rinse well in between. But how long? Just call or e-mail em.

Anyone have tips about post hardening baths? I have some 1970s 1980s film that takes forever to dry, I figure hardening would help.

[domaz]

You can harden emulsion with Formalin, Glyxoal, Chrome Alum or Potassium Alum. Of those Potassium Alum is probably the safest chemical, but maybe not the most effective. Here's a link to a few formulas for hardening baths