If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
nose/eye - Passed Out, Part Two
John wrote
(Dan Quinn) wrote: A one-method-fits-all mentality pervades the silver-gelatine community. Most simply understand that the vast majority of the chemicals used in the B-&-W darkroom are not going to cause... That is one of the two main ingrediants of the "one-method-fits-all" mentality. The second is the unbroken adherence of the industry, world wide, to a process now 80 years running. Only Ilford has budged. They do recommend a neutral, ph 7, stop for film. Photographer's Formulary does sell ready-mix ph 7 plus fixers. Also there is the always available very plain fix, sodium thiosulfate. It works fine as is and there are no fumes or oder. Currently I'm giving P. Formulary's 60% ammonium thiosulfate a try. At a 1:31 dilution it works quickly and has no oder. I'll test it two bath at 1:63 each bath. I've not checked the ph with my pHep ph meter. I think the ph to be close to neutral. As I stated in my first post, I do not ail when using ph less than 7 stop or fix. No oder and the chemistry of the process itself are my justification for moveing away from less than ph 7. ...hypochondriacs. Unfair. Dan |
#2
|
|||
|
|||
nose/eye - Passed Out, Part Two
Tom Phillips wrote
Advising people building a darkroom to eliminate having a ventilation system just because... At the most I suggested that ventilation specificly for darkroom work is not needed. To ventilate or not to ventilate is the question. The answere is to fume or not to fume. To fume opens the question to or not to ventilate. To or not to is according to one's own willingness to resign oneself. Tolerance is a major factor. Advising those interested in doing darkroom work to go to the time and expense of installing ventilation equipment when it is not necessary is, in my opinion, irresponsible! As for the big three, Kodak, Ilford, and Agfa, I think they missed the boat. They have also caused many undue concern. Dan |
#3
|
|||
|
|||
nose/eye - Passed Out, Part Two
Dan Quinn wrote: Tom Phillips wrote Advising people building a darkroom to eliminate having a ventilation system just because... At the most I suggested that ventilation specificly for darkroom work is not needed. To ventilate or not to ventilate is the question. The answere is to fume or not to fume. To fume opens the question to or not to ventilate. To or not to is according to one's own willingness to resign oneself. Tolerance is a major factor. Ventilation is prudent for other reasons already mentioned (fresh air, dust, chemical particulates, temp/humidity control, smoking, etc.) The possibility or presense of acid fumes certainly requires ventilation, but should not be considered the fundamental reason for adequate venting. Advising those interested in doing darkroom work to go to the time and expense of installing ventilation equipment when it is not necessary is, in my opinion, irresponsible! Going to the trouble of construction and then ignoring ventilation in the planning seems a wasted opportunity, if not foolish. As for the big three, Kodak, Ilford, and Agfa, I think they missed the boat. They have also caused many undue concern. Dan |
#5
|
|||
|
|||
nose/eye - Passed Out, Part Two
On Tue, 27 Jan 2004 00:17:55 -0500, Patrick Gainer
wrote: At my age, the diverticuli in my large intestine make it essential to have ventilation in my darkroom. That's why they call us "Old Farts". Diverticuli are so called because they cause no end of diversions and such comments as "Speak again, oh toothless one." The version I heard was "The horn works, now try the lights" ... |
Thread Tools | |
Display Modes | |
|
|