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Anyone for to consiously inhale atomized Na-thiocyanate, hydroxylamine sulphate, K-hydroquinone sulphonate, p-tolunesulphonic acid? These are some elements of photographic processess C-41, E-6, CIBA to name a few. You'll find; >CODE OF PRACTICE >FOR >PHOTOGRAPHIC LABORATORY SAFETY at http://www.anu.edu.au/hr/ohs/policies/photo.html and there under ventilation: >>Flow of air through rooms should allow a complete room air change >>in 8 minutes. The actual flow rate of air needed depends on the >>room volume and air distribution efficiency within the room. A >>diffused air flow is necessary to prevent localised drafts and >>rapid cooling and/or evaporation of processing solutions. KODAK has info (as PDF) on http://www.kodak.fr/US/en/corp/environment/kes/pubs/pdfs/J98A http://www.kodak.fr/US/en/corp/environment/kes/pubs/pdfs/J312 http://www.kodak.fr/US/en/corp/environment/kes/pubs/pdfs/J314 > > Ansel was only one of many photographers that lived very long lives. > >Which really proves nothing. In addition I don't recall anyone saying these >problems were of a life threatening nature. > >> It seems that the only real concern with photo chemicals that has been >> documented by true professionals, not a bunch of eco-freaks is skin >problems >> from the developers. This includes color chemicals.. > >I'm convinced from my own experience and those of many others that problems >from inhalation can develop over the long term. Anecdotal, yes, but to the >best of my knowledge science has yet to find this issue significant enough >to turn it's considerable potential for investigation in this direction. If >you know of any credible studies that track high exposure darkroom workers >over the long term, please let us know. > >The numbers who use "science" to willfully and stubbornly ignore the >patently obvious are legion. You appear to have joined their ranks. > >Dave > >> >> ron >> ----- Original Message ----- >> From: Dave King <kingphoto@mindspring.com> >> To: <scan@leben.com> >> Sent: Friday, December 28, 2001 8:48 AM >> Subject: Re: Darkroom hazards, was Levels & Curves >> >> >> > Artist beware isn't about photography, if I recall, photo chemicals only >> get >> > passing mention. It's about materials that sculptors and painters use, >> some >> > of which are extremely hazardous. Significant numbers of artists have >> been >> > severely injured before even knowing the potential dangers. Perhaps >> you're >> > thinking of "Over Exposure", which is about photography specifically? >> Which >> > book are you referring to that came out after Ansel died? >> > >> > Whether the information is correct to the point of scientific certainty >> > isn't the deal here. It's to alert people to the dangers, and help them >> be >> > avoided. My memory of the book (it's not at hand) is that information >was >> > presented as it existed, some anecdotal, some from controlled tests as > > they > > > existed. If I recall, caveats about accuracy were given. > > > > > > Most darkroom chemicals aren't terribly dangerous in the short term, but >> > neither is smoking, and my grandmother who smoked all her life lived to >> 80+. >> > The inference using Ansel as example is absurd. >> > >> > Dave >> > >> > ----- Original Message ----- >> > From: morris <morris@jps.net> >> > To: <scan@leben.com> >> > Sent: Thursday, December 27, 2001 12:29 PM >> > Subject: Re: Darkroom hazards, was Levels & Curves >> > >> > >> > > Thats why Ansel only lived to be 80+. >> > > "Artest Beware" is a lot of BS from people that don't have any >> background >> > in >> > > medicine or bio-chemistry. >> > > The same people that felt BTFE in our gasoline would be good. >> > > Read the book that came out after Ansel died, which was reviewed by >both >> > > Harvard and RIT. >> > > Ron >> > > >> > > ----- Original Message ----- >> > > From: Dave King <kingphoto@mindspring.com> >> > > To: <scan@leben.com> >> > > Sent: Thursday, December 27, 2001 7:43 AM >> > > Subject: Darkroom hazards, was Levels & Curves >> > > >> > > >> > > > I was taught this in art school college level photo classes 30 years > > ago >> > > > too. By cracky:) Let's hope this isn't still being taught - ever >> > wonder >> > > > why so many old photographers develop Parkinson's? >> > > > >> > > > I haven't used my darkroom since investing in Profiler Pro and an >> X-Rite >> > > > DTP-41:), but I had become somewhat chemically sensitive over the >> years >> > > and >> > > > found a book called "Artist Beware" very helpful in the design of my >> > last >> > > > darkroom ventilation system. (Another book called "Over Exposure" >> gives >> > > > hazard analysis for photographic chemicals specifically. Don't know >> if >> > > > either is still in print.) >> > > > >> > > > Using what I learned in Artist Beware, I built a shallow but wide >box >> > onto >> > > > the wall the sink is against and the intake slot is the bottom edge >of >> > > that >> > > > box. This box feeds into a larger volume mixing chamber that is >> > connected >> > > > by standard vent pipe materials to an exterior mounted *restaurant >> size* >> > > > kitchen exhaust fan (available at Grainer). This puppy works, the >> slot >> > is >> > > > well below head level so fumes are routed away, and the pull is >strong >> > > > enough that small children and pets get sucked into the vent slot >when >> > > they >> > > > get too close:) The stuff they market specifically as darkroom >> > > ventilation >> > > > products is a pathetic, and perhaps even dangerous, joke - they >don't >> > > work. >> > > > >> > > > Dave >> > > > >> > > > ----- Original Message ----- >> > > > From: gary <gsellani@accesscom.com> >> > > > To: <scan@leben.com> >> > > > Sent: Thursday, December 27, 2001 1:23 AM >> > > > Subject: RE: Levels & Curves >> > > > >> > > > >> > > > > I've seen the motorized vents and Keeble and Schucat. If you >haven't >> > > been >> > > > to >> > > > > the SF Bay area, that is the "bring lots of cash but we have the >> best" >> > > > > camera store. It is one of the few lens rental places in the area. >> The >> > > > have >> > > > > the Jobo AT1500 there as well. >> > > > > >> > > > > Getting back to the darkroom, I remember in high school handling >the >> > > > prints >> > > > > with bare hands. Even worse, one trick we learned was to rub the >> areas >> > > on >> > > > > the print you wanted to get developed a bit more because the >> friction >> > > > would >> > > > > heat up the area, which in turn speeded up development. I'm >guessing >> > > today >> > > > > nobody puts their fingers in the chemical baths. >> > > > > >> > > > > > -----Original Message----- >> > > > > > From: owner-scan@leben.com [mailto:owner-scan@leben.com]On >Behalf >> Of >> > > > > > byard pidgeon >> > > > > > Sent: Wednesday, December 26, 2001 5:38 PM >> > > > > > To: scan@leben.com >> > > > > > Subject: Re: Levels & Curves >> > > > > > >> > > > > > >> > > > > > When you're putting in that "small darkroom", be sure you learn >> how >> > to >> > > > > > ventilate it properly so you don't poison yourself. >> > > > > > The American Lung Association may have some info for you on >this. >> > > > > > >> > > > > > on 12/26/2001 11:11 AM, gary at gsellani@accesscom.com wrote: >> > > > > > >> > > > > > > No argument that the digital manipulation is better than what >> > > > > > you can do by >> > > > > > > hand in a chemical process. >> > > > > > > >> > > > > > > That said, I have a house in design stage and will put in a >> > > > > > small darkroom, >> > > > > > > something I always wanted. We may reach a point in history >> > > > > > where I am the >> > > > > > > last guy in America doing wet photography. ;-) I notice lots >of >> > > > > > enlargers > > > > > > > > showing up on the used market. Hmmm..... -- regards, Robert - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.
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