Originally Posted by
interneg
I am very familiar with what New55 is - it's a conventional sheet film packaged with a podded monobath & a diffusion transfer receiver sheet. I've not tried new55 yet, but it is very clear from the instructions that the negative is not fully fixed at the time you recover it from the envelope after processing - anyway, it's the ammonium thiosulfate that does the hard work of fixing & clearing, not the acid. I suspect their recommendations may have been based around using a slightly less acid fix than one meant for use with a hardener - even so, Hypam has the same pH at working strength as Rapid Fix & Hypam is designed for use with a hardener. I'd not be entirely surprised if most of the less acid rapid fixers of the same intended dilution (1+4) worked fine used at 1+1 on New55.
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