Just scooped a box of 11x17 xray film..
supposedly sensitive in th IR band, 800nm
there's the home-made box camera sitting around waiting for a test 6hr
exposure..

I realise that PMK is a one-shot developer but I am wondering if the
two A/B parts would oxidize/change so quickly that in 12 hours the Pyro
wouldn't be functioning well as a developer anymore.
Ex:

Would anyone share the formula and process for the C-41 split developer?
 The one that was initially published in Darkroom Techniques (Photo
Techniques) magazine years back.  The process was relatively temperature
independent.  Any help would be appreciated.

I have a Durst 10x10 enlarger with an Omega colorhead.  It's big, bulky,
hard to align, loud as a jet engine and bright as a searchlight: I love
it.
The only thing I don't love is that its weird hybrid head uses an

HAZARDS OF AMMONİUM THİOSULFATE AND OTHER INGREDIENTS OF ILFORD HYPAM
FIXER:IF anyone had good knowledge,informations about hazards and effects
of chemicals and especially ilford hypam fixer and ammonium thiosulfate and
other ingredients and anyone who had problem or accident like ...

I currently got three questions about safelight in B&W printing:
1, I'v told that normal safelight, such as those produced by AP, can
not used for variable-grade papers such as those produced by ILFord.
I'v also heard Kaiser provides some filter-based safelight dedicated to

In the past I have always used Ilford LC29, purely because it is the only
developer that is stocked by the only local shop that sells this type of
stuff. Anyway, they've now stopped stocking developer, so I will be buying
developer online.  The place I am looking at online (www ...

I've started mixing my own developers and have been having trouble with
my potassium carbonate: specifically, when taking it out of the
(Photographer's Formulary) plastic bottle, some sort of static electric
charge is causing it to spray off the plastic spoon as it passes

In many development recipe there is often sodium sulphite to raise enough
alkalinity and as preservant.
I'm writing about film development.
Most of times I use my Microphen Type or ID-11 type recipe where is some

i'v brought this used enlarger home and settled it well.  but I found
the chassis  inclining a degree which is too large to me, thus when do
some large works, the projected image will go out of the margin of the
baseboard.

In the UK these two Vhinese emulsions are available from Retro Photographic.
They exhibit a unusual effect of halation around the highlights because
there is no anti-halation layer on the back of the film.
This much I have observed. I have also seen some marks on the emulsion ,on