Re: Pyrocat-HD for alt printing?

I concur. I recently used some stock solution that was 9 months old
and was stored half-full (optimist that I am) in a brown glass
bottle. I had no problems whatsoever.

Clay
On Aug 17, 2005, at 8:37 AM, Sandy King wrote:

> 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 Salž 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 Wed Aug 17 08:08:26 2005