[Darkroom] Expiration date on packets of Hypoclear? Mixing stop bath?
liliakai at gmail.com
Wed Feb 16 04:40:55 UTC 2011
hypoclear packets are possibly still useable. maybe mix it a little
stronger than recommended and extend your wash time to be safe. some
people don't even use hypoclear.
and yes, we are using 1:4 vinegar stop. normal stop bath is acetic
acid and water == vinegar! it should be replaced when it starts to
feel greasy (alkaline) when rubbed between your fingertips.
On Tue, Feb 15, 2011 at 3:56 PM, Rubin Abdi <rubin at starset.net> wrote:
> Does it matter? There are a couple of packets expiring around 2006-2008,
> and then ones that seem newer.
> Additional is stop bath nothing more then just 1:4 of the vinegar on the
> top shelf?
> Rubin Abdi
> rubin at starset.net
> Darkroom mailing list
> Darkroom at lists.noisebridge.net
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