Sifting the powder is not a good idea. There are nasty organic components in many developers that are carcinogenic. Unless you do this outside wearing a rubber suit, gloves, full face mask and have a positive pressure feed of filtered air to breathe. Do I need funny faces? But seriously -- the powder is often very fine and may float around the room in an invisible cloud.
D _______________ Dr E D F Williams http://personal.inet.fi/cool/don.williams Author's Web Site and Photo Gallery Updated: July 31, 2003 ----- Original Message ----- From: "William Robb" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, August 04, 2003 9:30 PM Subject: Re: Chemistry Q's > > ----- Original Message ----- > From: "Mark Cassino" > > Subject: Re: Chemistry Q's > > > > > > There seems to be a common thread of high contrast in this stuff. He also > > had some Kalt special effects film (ISO - 6) and "Title" film. > > Both of those are kissing cousins to lithographic film. > > > > > > > > > > Kodak Film Cleaner: > > > > > >Basic film cleaner, most are trichlorethylene or some such. Always wipe > in a > > >straight line along the film, don't wipe in circles. > > > > Is it for the emulsion side, non-emulsion side, or both? > > For both sides. The stuff is great at taking fresh finger prints off of the > emulsion, so keep it around for the inevitable screw up. > > > > > I've cleaned slides and negs on the non-emulsion slide with just a drop of > > distilled water on a swab. Seems safer.... > > Yer a pansy.... I dump em into a sink of soapy water and wash em that > way..... > > > > >Sift the powder into a mixing bowl, then measure how many teaspoons of > > >powder there are. Divide the powder into 5 equal amounts and store each > > >portion in a Baggie. > > > > I've been told that a lot of photo chemicals in bags are like a cake mix - > > different dry chemicals dumped into the bag but not mixed up uniformly - > > making it all but impossible to get decent results by dividing the dry > > chemisty. Is hypo a homogenous chemical or do I have to really mix it up > > before dividing it. > > I would mix it on general principles, thats why I mentioned sifting the > stuff, though I am pretty sure it is a homogenous product. > > > > >Any of the cyanide compounds should probably be dealt with as a hazardous > > >material. > > > > Yeah - definitely! > > If you live near a Great Lake, just dump it in. Thats what the big boys do. > (I wish I was kidding....) > > William Robb >
