Cleanin Pyro Stained Jobo plastic reels?

[patrickjames]

I have a bunch of PMK and Pyrocat stained white plastic Jobo reels. I searched for over an hour here to find a way to clean them with no success. Does anyone have a simple way? I don't have any acids available except for Muriatic. Would Clorox work? How about Pot. Ferri.? Any suggestions?

Patrick

 

[patrickjames]

Ahem....

 

[Ian Grant]

No idea what Chlorox is, I guess some type of Sodium Hypochlorite solution. I clean my reels every few months in Domestos (UK &Europe) which is also available here in Turkey, this will be similar to Chlorox it's a thickened Sodium Hypochlorite solution.

Other alternatives I use are Potassium Permanganate/Acetic acid clearing the stain afterwards with Sodium Metabisulphite, Potassium Dichromate/Hydrochloric acid sometimes works as well.

Ian

 

[PhotoJim]

This is probably not the answer you were looking for, but here is my answer.

Why bother cleaning them at all? The stain causes no harm.

 

[Ian Grant]

Cleaning reels also removes the general build up of residues left after you remove film from them. It's surprising just how much build up there is a fter a number f processing cycles. This can lead to contamination.

Ian

 

[JBrunner]

Chlorox is a brand name for chlorine bleach. It might be destructive to the plastics, IDK for sure. If they didn't melt or fatigue, they would likely turn back white, but you can be the first to try not me. A good general scrubbing with a soft brush in a mild solution and good rinsing should do the trick, I wouldn't worry about the stain so much. It will be right back anyway.

 

[Ian Grant]

Well Sodium Hypchlorite, which Jason confirms is the same as Chlorox hasn't harmed my Paterson ofr Jobo tanks yet, most of which are over 30 years old

But the bleach does remove gelatin build up that other methods don't touch.

Ian

 

[patrickjames]

Thanks guys. I knew I could count on you. I was concerned about the bleach making the plastic brittle, but I guess I can use a low concentration of it and go from there. Maybe I will start with the Muriatic (dilute hydrochloric) acid. And of course I won't use them together.

 

[lomomagix]

Doesn't Chlorox come in plastic containers? I suppose they would be safe for plastics then.
(But then again, there are probably a trillion kinds of plastics!)