Re: Pyrocat-HD for alt printing?

Susan,

I know how awful it is to go to a lot of trouble and lose your
negatives through no fault of your own. Hope you get the problem
solved soon.

Be very careful when mixing the working solution. I devote separate
mixing beakers and syringes to the two solutions to cut down on the
risk of contamination of Stock A with Stock B. I am personally
convinced that this is the number one culprit for early death of
Stock A.

Best,

Sandy

>Sandy,
>I think you are correct, the bottles I used are the plastic ones- apparently
>a big no-no.. I will start using the brown bottles and see if that is the
>problem.
>I really likes the P-Cat as it is much smoother and I am able to do a few
>processes with it than juts the POP.
>I will perservere- I wrote to Victor about the same ideas...
>Don't worry, I will continue to use the chemical...
>Susan
>----- Original Message -----
>From: "Sandy King" <sanking@clemson.edu>
>To: <alt-photo-process-l@sask.usask.ca>
>Sent: Wednesday, August 17, 2005 6:37 AM
>Subject: Re: Pyrocat-HD for alt printing?
>
>
>Susan,
>
>
>I am sorry that you had problems with Pyrocat-HD.
>However, I am in contact with enough
>photographers to know for a fact that the stock
>solution does not normally oxidize in two months,
>in fact it typically lasts at least a year. If
>your solution oxidized in two months there must
>have been some kind of contamination of the Stock
>A solution. Maybe the brown bottles had something
>to do with it. I just have no experience with
>these bottles as I store all of my developers in
>glass containers.
>
>Sandy
>
>
>>Hi Victor,
>>I was told by the photographic guru of San Diego, Ca who is still teaching
>>at many years plus that the P-Cat oxidizes very quickly in the brown
>bottles
>>and the bottles are the worst thing put upon the public. He says thta the
>>Coca -cola clear bottles are better and the glass are fine (brown) if kept
>>in a dim area.
>>I have had problems with the P-Cat and will change back to Pyro which I
>know
>>won't oxidize in 2 months. The important thing is to keep the bottles
>topped
>>up- or; transfer to smaller bottles (if you have them).
>>Hope this helps,
>>Susan
>>----- Original Message -----
>>From: "Victor Loverro" <victor.loverro@verizon.net>
>>To: <alt-photo-process-l@sask.usask.ca>
>>Sent: Tuesday, August 16, 2005 9:00 AM
>>Subject: Re: Pyrocat-HD for alt printing?
>>
>>
>>Susan,
>> Could you elaborate on the different containers? I always thought that
>>the brown bottles were supposed to help prevent oxidation of chemicals.
>>Glass being better than plastic to keep oxygen out and the brown for light.
>> Victor
>>
>>----- Original Message -----
>>From: "Susan Huber" <shuber@ssisland.com>
>>To: <alt-photo-process-l@sask.usask.ca>
>>Sent: Tuesday, August 16, 2005 5:18 AM
>>Subject: Re: Pyrocat-HD for alt printing?
>>
>>
>>> Hi Loris,
>>> I believe the P-Cat takes less time to print out than the Pyro al
>>Hutchens.
>>> The thing that is troublesome is; the P-Cat oxidizes very quickly
>compared
>>> to the Pyro and that being in different containers. The brown bottles
>are
>>> the worst! Use other bottles. I am not amused at travelling 9,000 kms
>and
>>> then ruining some of my negatives... Sandy King can clarify.
>>> Always,
>>> Susan
>>>
>>> ----- Original Message -----
>>> From: "Loris Medici" <loris_medici@mynet.com>
>>> To: <alt-photo-process-l@sask.usask.ca>
>>> Sent: Tuesday, August 16, 2005 12:17 AM
>>> Subject: RE: Pyrocat-HD for alt printing?
>>>
>>>
>>> Donald, I haven't used Pyrocat-HD for alt. processes yet (because I use
>>> digital negatives, not in-camera negatives) but on every publication or
>>> article I've read it was said that pyro stained negatives takes longer
>>> to print - because the color is much more opaque to UV light (even if it
>>> seems very thin to you). In your case the exposure takes around 2 stops
>>> longer, I'm sure there will be pyro in-camera negative users that will
>>> approve/disapprove this difference.
>>>
>>> Regards,
>>> Loris.
> >>
>>> -----Original Message-----
>>> From: donald ciccone [mailto:dsciccone@verizon.net]
>>> Sent: 16 Ag~ustos 2005 Salz 06:55
>>> To: alt-photo-process-l@sask.usask.ca
>>> Subject: Re: Pyrocat-HD for alt printing?
>>>
>>>
>>> ... I recently tried making a Vandyke
>>> (brown) print but found my exposure times were very long (30 minutes or
>>> more). The UV source is a bank of 18 inch blacklight bulbs ("350
>>> Blacklight" by Sylvania). I have used the same printer with non-pyro
>>> negatives and typically get exposure times for Vandyke prints in the 5-8
>>>
>>> minute range. Ideally, I would like to get more reasonable exposure
>>> times
>>> for pyro-developed negatives as well (possibly 10-15 minutes). Any
>>> suggestions how to achieve this or do these negatives simply require a
>>> stronger/different UV source? The pyro negatives do not appear dense or
>>>
>>> blocked up when viewed on a light box. Thanks for any assistance.
>>>
>>>
Received on Thu Aug 18 08:26:33 2005