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Photo Forum / Film Photography / Darkroom / November 2004Need Help Removing Old Developer
I bought a used black and white paper processor when I removed the racks I found that fixer and deverlper had been left in the unit. The fixer broke up and came out in cakes. The developer is about a 1/4" thick in the bottom of the tank and very hard to scrape out. Any one out there know what I can use to dislove the developer so I can get it out. Someone said vinegar might work. I have not tried that yet. If you know of something you can email me at swamptrader@cox.net >I bought a used black and white paper processor when I removed the racks I >found that fixer and deverlper had been left in the unit. The fixer broke up [quoted text clipped - 5 lines] > > How about hot water in copious quantities? > >I bought a used black and white paper processor when I removed the racks I > >found that fixer and deverlper had been left in the unit. The fixer broke up [quoted text clipped - 5 lines] > > > How about hot water in copious quantities? Soap and water and a sponge might work if the stains/ residue isn't from long term neglect. But sounds like they guy never washed the processor after each use and has a build up. I think Kodak makes a devloper cleaner for use with professional systems/processors. Otherwise one can mix cleaners. Note these are very caustic solutions and you should have good ventilation (i.e., don't breath them and use adequate gloves/skin-eye protection.) Kodak TC-1 Tray Cleaner Water 1.0 liter Potassium Dichromate, anhydrous 90.0 grams Sulfuric Acid, concentrated 96.0 milliliters Pour a small amount into trays or bottles and swirl it around until the stain is gone. Rinse. Kodak TC-3 Tray Cleaner Solution A Water 1.0 liter Potassium Permanganate 2.0 grams Sulfuric Acid, concentrated 4.0 milliliters Solution B Water 1.0 liter Sodium Bisulfite, anhydrous 30 grams Sodium Sulfite, anhydrous 30 grams Pour a small amount of solution A and leave for a few minutes. Rinse. Pour the same amount of solution B and agitate until stain is gone. Wash thoroughly. Solutions can be used repeated by solutions shouldn't be stored. http://www.kodak.com/global/en/professional/support/techPubs/ti2000/ti2000.pdf http://www.kodak.com/global/en/professional/support/techPubs/ti0323/ti0323.pdf > > >I bought a used black and white paper processor when I removed the racks I > > >found that fixer and deverlper had been left in the unit. The fixer broke up [quoted text clipped - 44 lines] > Solutions can be used repeated by solutions shouldn't > be stored. > > deverlper had been left in the unit. what I can use > > to dislove the developer > How about hot water in copious quantities? And just let it soak for a few hours, clean, soak some more. At the end try some Spic'n'Span on a paper towel.  SignatureNicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. Remove spaces etc. to reply: n o lindan at net com dot com psst.. want to buy an f-stop timer? nolindan.com/da/fstop/ >I bought a used black and white paper processor when I removed the racks I >found that fixer and deverlper had been left in the unit. The fixer broke up [quoted text clipped - 3 lines] >work. I have not tried that yet. If you know of something you can email me >at swamptrader@cox.net Lysol toilet bowl cleaner. Make sure you use it in a well ventilated area with a respirator because it will give off fumes. Lysol Toilet Bowl Cleaner works great on color developer racks, too. Clorox should be avoided and never ever mix Clorox with anything acid unless you have a gas mask (like fixer, stop bath or Lysol Toilet Bowl Cleaner!!)!! Clorox also damages stainless steel, the tanks will need to be re-passivated if you use it, so it's altogether a bad idea unless you're going after algae/bio-slime in wash tanks. You used to be able to buy ready mixed tray cleaners with dichromates but I believe the dichromates are now considered HazMat and carcinogenic. In my limited experience the stuff would bleach trays white but the trays stained when put back in contact with developers. I'd try something else first. Signaturedarkroommike ---------- > > >I bought a used black and white paper processor when I removed the racks I [quoted text clipped - 7 lines] > Lysol toilet bowl cleaner. Make sure you use it in a well ventilated > area with a respirator because it will give off fumes. I use hydrochloric acid (actually, the commercial "Muriatic Acid"), often used for cleaning brick and masonry surfaces. It works like a charm. Follow the recommendations for use on the container. Pete Schermerhorn, in the glorious Berkshire hills of western Massachusetts Remove nojunk. |
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