Matt Baker (Matthew.H.Baker@drexel.edu)
Mon, 02 Aug 1999 16:57:14 -0400 (EDT)
>Date: Mon, 02 Aug 1999 14:55:59 -0400
>From: Don Bryant <dsbryant@worldnet.att.net>
>Subject: Re: Pt/Pd-Platine, white spots
>To: alt-photo-process-l@sask.usask.ca
>Reply-to: alt-photo-process-l@sask.usask.ca
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>Richard,
>
>Do your close friends call you 'Dick'?
>
>Don Bryant
>----- Original Message -----
>From: C. Richard Head <c_richard_head@yahoo.com>
>To: <alt-photo-process-l@sask.usask.ca>
>Sent: Monday, August 02, 1999 2:32 PM
>Subject: Re: Pt/Pd-Platine, white spots
>
>
>> judy asked if rubbing my paper leaves oil in spots:
>>
>> i was once concerned about this myself so i did a few tests several
>> years ago to study this possibility. what i did was to weigh the paper
>> both before and after i rubbed it on a very accurate scale maintained
>> at an Gaithersburg Office of the US Bureau of Weights and Measures
>> (just outside Washington DC). I found that on average my paper has
>> gained a median weight of 0.003 nanograms after I wipe it firmly making
>> three mean average thorough passes. This experiment was repeated
>> sufficiently to establish a 95 percent confidence factor for this
>> average, which means to me that its pretty darn reliable. I then
>> immediately sealed some of this paper in a spare bell jar i happened to
>> have in my trunk and took these samples directly over to the office of
>> one of my old RIT college alums. I'm retired of course. Yet, he
>> happens to work for the National Institute of Health, headquartered in
>> Bethesda just a little ways from Gaithersburg. Of course, I sterilized
>> the jar in an autoclave that was available to the public on a first
>> come first serve 24-hour loan basis at the National Institute of
>> Occupational Safety and Health, which is next door to the National
>> Institute of Health. Unfortunately, the loaner bell jar autoclave is
>> no longer available because i tripped and dropped it in the parking lot
>> when i was taking it back. Both Gathersburg and Bethesda are in
>> Maryland. It's broken. He's some kind of biologist. I think he said
>> he was a micropathologist, but i didn't seem to write that down in my
>> copius technical notes.
>>
>> anyway, he did a thorough study that took him and several of his
>> colleagues more than 14 months of full-time research to finish. I was
>> very surprised they were able to do this at taxpayer expense. When he
>> explained, I said that they were very ingenius about getting to qualify
>> this very important alternative work under the Aids Research Project.
>> He said: "not really, they do this sort of thing all the time." During
>> the process, they had me prepare several more samples. Once i couldn't
>> wash my hands for three days during which times i was required to
>> attempt donating regular sperm samples (i think they wanted to freeze
>> some for their Master Printer seed bank, but i'll have to go back and
>> try that part again with a better movie.) anyway, they found that, and
>> this is just for the "routinely washes hands iterations of the
>> experiment." For those who are technically-minded or want to verify my
>> results, I wash regularly and just before beginning a printing session
>> with liquid Dial #1 Antibacterial Soap. in this mystery material, they
>> found an weighted average of .027568903 nanograms of solid materials
>> comprised on average of the following: 16 percent light skin oil, 13
>> percent pulverized dehydrated skin flakes, 27 percent mascerated
>> dandruff pulp, and 47 percent "sea salt." The difference was
>> attributed to errors and possilbly a bit of h2o (light water).
>>
>> They concluded that with decent personal hygiene that since the oil
>> residue is light skin oil and not heavy skin oil, there is no reason to
>> be alarmed. This small smidgen of light skin oil won't interfere with
>> any alternative photo, printing, or other art processes and is likely
>> to contribute a small increase in the archival permanence of the
>> paper/art.
>>
>>
>>
>>
>> ===
>> C. Richard Head, Photographer
>> C. Richard Head Fine Art Photography
>> Especially Toned Silver Gelatin Photographs &
>> Exquisite Platinum and Rare Uranium Limited Editions, imp.
>> Workshops and One-on-One Personal Instruction
>> _____________________________________________________________
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>>
>
This archive was generated by hypermail 2.0b3 on Thu Oct 28 1999 - 21:40:40