robert_boyer Posted September 9, 2000 Share Posted September 9, 2000 I am having a consistent problem with Kodak Photoflo 200. If I mix a large batch with tap water there seems to be crap growing in it after about a week. I don't really want to go with distiled water for large batches, has anyone else had and solved this problem? Link to comment Share on other sites More sharing options...
cem_topdemir2 Posted September 9, 2000 Share Posted September 9, 2000 I don't see the advantage of mixing photoflo solution in advance.I just add a drop or two to enough water to cover the film,that's all.And of course i never had that problem.Using distilled or at least filtered(this is what i do) water is a good idea regardless,though. Link to comment Share on other sites More sharing options...
christian_harkness Posted September 9, 2000 Share Posted September 9, 2000 I do as Cem does. After being stingy for too long, I gave up and buy distilled water for PhotoFlo use only. I ruined too many negatives using tap water. <p> chris Link to comment Share on other sites More sharing options...
warren_weckesser2 Posted September 9, 2000 Share Posted September 9, 2000 Robert, <p> I've used two public darkrooms, and in both of these, one always had to check whether the photoflo had gotten "filmy". I think this is normal for this stuff. They used tap water, but I don't know if distilled water would make a difference. The only solution I can suggest is use small batches--some folks even use just a tiny amount "one-shot". Some time ago, I stopped using a wetting agent, and after washing the film in tap water, I finish washing the film with distilled water. So far, it has worked fine. Link to comment Share on other sites More sharing options...
ed b. Posted September 9, 2000 Share Posted September 9, 2000 Edwal LFN low foam wetting agent is a superior product. You only need to add a drop or two per liter of water. You should always use distilled water anyway. Link to comment Share on other sites More sharing options...
terry_carraway Posted September 10, 2000 Share Posted September 10, 2000 I use distilled water for everything. It just removes one variable, at not much cost. <p> Why make up large amounts of PhotoFlo anyway? I mix a little more than needed for my tanks, and use it until I neeed to mix more, or it gets funky. <p> I do a last rinse in distilled water after washing, then into PhotoFlo (going to try Edwal LFN) mixed in distilled water. Link to comment Share on other sites More sharing options...
robert_orofino3 Posted September 10, 2000 Share Posted September 10, 2000 I mix my Photoflo 200 as a one shot using the bottle cap. Instructions printed on the label. I've been doing this for YEARS with no problem. Link to comment Share on other sites More sharing options...
scott walton Posted September 11, 2000 Share Posted September 11, 2000 Have to agree with Ed on the LFN, I tried it years ago and then through away all my Photoflo. You can use a drop of it in your developer also to release the water tension to cure any and all airbells!!! The stuff is great! Cheers Link to comment Share on other sites More sharing options...
ken_heflinger2 Posted September 11, 2000 Share Posted September 11, 2000 Robert, <p> I just use a small soda straw as a pipette and "suck out" just a little for the tank. My water here is pretty clean so I don't bother with distilled water. <p> I found that mixed photoflo goes bad .. and eventually smells. <p> Ken Link to comment Share on other sites More sharing options...
tim_brown Posted September 11, 2000 Share Posted September 11, 2000 I dole out my Photoflo from a dropper. One drop per 2 oz of water, use once and discard. Link to comment Share on other sites More sharing options...
brian_c._miller Posted September 15, 2000 Share Posted September 15, 2000 I myself have never had those problems with Photoflo. Have you also rinsed out your bottles with boiling water? Whatever organic scum is growing probably is not killed with just washing the bottle out with cold water, and is there the next time you use the bottle. I change Photoflo about every couple of weeks or so, just from useage. Link to comment Share on other sites More sharing options...
brian_c._miller Posted September 15, 2000 Share Posted September 15, 2000 From the Kodak Photo-Flo web page: (http://www.kodak.com/country/US/en/health/tiDocs/ti0688/ti0688.shtml) <p> <b>Scum on the dry film or plate:<b> <p> If the concentration of the working strength KODAK PHOTO-FLO Solution is too high, it can cause a scum to form on the film or plate surfaces. If this occurs, rewash the film and retreat it in PHOTO-FLO Solution of reduced concentration. <p> <i>Scumming can also result from old solutions, biological growth, or solutions that have accumulated gelatin, etc. from over-use.</i> <p> Scum on the base side usually can be removed by wiping carefully with a clean soft cloth, chamois, or cotton ball. Scum on the emulsion side can be harder to detect, and usually requires re-washing to remove. <p> <b>Storing Solutions</b> <p> Concentrates of PHOTO-FLO Solution should last indefinitely if the container is tightly capped. <p> Because of the convenience and high concentration of the liquid concentrates, mixing of working solution just before use is recommended. Also because of the high concentration of PHOTO-FLO Solution, <i>"one-shot" use delivers the highest quality final rinse while remaining economical.</i> <p> <b>Capacity</b> <p> The surfactant capacity of a working tank of PHOTO-FLO Solution will depend in part on the amount of film put through it, the quality of the water used in mixing, and the length of time a working solution is kept in service. Generally, it is recommended that the solution be changed when it begins to bead, streak, or leave scum on the surface of films or plates, or once per week, whichever is sooner. <p> Formation of slime on tank walls, and / or evidence of biological growth in the tank are also indications that the solution should be changed more frequently. Link to comment Share on other sites More sharing options...
brian_c._miller Posted September 15, 2000 Share Posted September 15, 2000 </b>Nuts, I missed a tag! Sorry about all the bold face. Link to comment Share on other sites More sharing options...
brian_c._miller Posted September 15, 2000 Share Posted September 15, 2000 </b></b></b><small>Nutty HTML... >:( Link to comment Share on other sites More sharing options...
rui_lourosa Posted September 11, 2002 Share Posted September 11, 2002 also try tetenal mirasol, the only one with fungicide and bactericide agents, Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now