[pure-silver] Re: HC 110 lament
- From: Gerald Koch <gerald.koch@xxxxxxx>
- To: "pure-silver@xxxxxxxxxxxxx" <pure-silver@xxxxxxxxxxxxx>
- Date: Sun, 30 Mar 2014 07:17:50 -0700 (PDT)
Sulfur dioxide is nasty stuff. It produces asthma like symptoms and can lead
to pulmonary collapse. I think that it is meaningful that in the entire
existence of HC-110 no company has tried to make a true copy of it even though
a similar formula is given in a patent. The reason I think is the difficulty
involved. Ilford makes something somewhat similar but it contains water and
has an inferior storage life.
Since Kodak designed HC-110 to gives results as close as possible to D-76 the
latter is an obvious substitute. The following site has some excellent
information, http://www.covingtoninnovations.com/hc110/
Jerry
________________________________
From: BOB KISS <bobkiss@xxxxxxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Sunday, March 30, 2014 9:51 AM
Subject: [pure-silver] Re: HC 110 lament
To
find sulfur dioxide, just take a deep breath in any major city! LOL!!!
All
seriousness aside, it is easy to make sulfur dioxide from this:
http://stores.photoformulary.com/search.php?search_query=sulfur+dioxide&x=17&y=12
To
find diethanolamine look here:
http://www.chemsavers.com/search.php?search_query=diethanolamine
Yes,
it is hard to find some of the proprietary Kodak dev ingredients but, though
they are often expensive, they can be found.
CHEERS!
BOB
________________________________
From:pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx]
On Behalf Of Gerald Koch
Sent: Saturday, March 29, 2014
10:09 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: HC 110
lament
Some of the
chemicals used in the Kodak patent were made by Kodak specifically for
HC-110. For example the addition product of diethanolamine and sulfur
dioxide. AFAIK and they are not commercially available.
Jerry
From:BOB KISS
<bobkiss@xxxxxxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Monday, March 24, 2014 11:31
AM
Subject: [pure-silver] Re: HC 110
lament
You might need to order if from UK and stock up:
http://www.firstcall-photographic.co.uk/products/498/kodak-hc110-film-developer-1-litre
Or work from the formula in The Film Developing Cook Book
which was derived from the patent. You might have a heck of a time
finding and stocking some of those more esoteric reagents in the formula.
CHEERS!
BOB
From:pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx]
On Behalf Of Les Myers
Sent: Monday, March 24, 2014 11:17
AM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] HC 110
lament
I have been
trying to restock my HC-110 (I have about 5 ounces left). While I am not
married to this developer, it works well for my film. But I find "no
longer available" and "not in stock; don't know when it will be"
messages on mail order retailers. Another chink in the film supply/process
world.
Les
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