Response to How long does ilford hypam last?

Stephane,

I have a small datasheet from Ilford for Hypam:

Diluted 1+4 its capacity is 24 rolls of 36exp. film

For RC paper: 80 8x10's (I'm assuming a 1+9 dilution here)

For Fiberbased paper: 40 sheets.

Now, all of this is fairly uninteresting from your point of view because the storage life for diluted fixer is very short: 7 days.

My advice would be to buy it in large quantities (5 liters or something there-abouts). That will help you keep the price down. At that point it will be cheap enough that I would simply remix a new batch when it doubt. Price-wise it's a question of quarters, but the damage done (and first seen years down the road) is considerable by comparison if you use an exhausted fixer.

I mix up a batch a day. If I'm going to work two days in a row, I save the fixer for the next day. Otherwise I just always mix a fresh batch. It's not worth taking a risk with bad fixer.

Regards, Daniel Ridings

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