First, thanks so much to everyone who gives their time and expertise to make this such an informative bb. As my printing sessions are, to say the least, episodic, I find that I may have undiluted hypo clear in a partially full bottle for well over a year. Is there an easy way to test its usefulness after such a period of time? Also my undiluted fixer is in a similar situation, however the Tetenal test strips indicate that it's still okay. Thanks

-- Yaakov Asher Sinclair (sinclair@actco.co.il), January 02, 2001

Answers

As best I can decipher Kodak's data sheet, it keeps indefinitely in a full container, and about 3 months in a partially full container (the actual entry is NA/3 months).

-- Ed Buffaloe (edb@unblinkingeye.com), January 03, 2001.