Ilford Wash Aid is a substitute for Kodak Hypo Clearing Agent. This compound has a relatively small molecular size, is chemically inert and is pH neutral. It tends to leave the neg along with the water - any residue is undetectable. The bottom line is - use the proper stuff. Get complete app visibility for everything from backend APIs to frontend user devices with New Relic Application Performance Monitoring. If detergent or soap worked as a wetting agent then Kodak would use it. The fact that Kodak doesn't use it should tell you all you need to know. Many decades of work in commercial/pro labs. I heard about this recipe, but never used it.ĥ gal water (danger.your water might not be as clean as you think.)Įvidently the key is the glycerin. It adds a slippery element that prevents spotting. Recipe above gives you a lifetime supply of course.Įarlier post on this thread was wise. The only reason this conversation came up at work was because we were a very very busy lab, and always looking out for a way to save/make a dime. We ran about 300 rolls of 35 on an average day. Even with that volume, we decided to keep buying Photo Flo and not risk the experiment on other people's film. If you want to experiment on your own, go right ahead.īut.all this is really about trace crap in your water. Photo Flo is a final wash/rinse to remove the minerals etc. that comes with tap water from your film. These traces won't hurt you when you drink it (it's bacteria that bites), but they leave residue on your film when it dries. Pyridylphosphonium Salts as Alternatives to Cyanopyridines in. If you're that concerned.do some homework on your local water supply, and maybe do your final rinse with distilled water. Many do.Supplementary Figure 1 Image showing the photoflow set-up with the protective cover. Most bottled "drinking water" is just tap water in a jug. Wetting agent is normally ethylene glycol (it's used in car antifreeze). People who use soap or detergent and claim it works fine usually use it in such incredibly low concentrations that it does not actually do anything. In both cases they have to be used at quite high concentrations in order to work effectively and this results in a sticky coating of soap/detergent remaining on the neg. In addition, detergents contain other compounds designed to do different things - remember that they are designed for washing greasy dishes - which themselves decompose. In addition, soap reacts with the dissolved salts in tap water to form an insoluble scum which can end up on your neg.ĭetergents are manufactured from oil and are complex long chain molecules which again can break down over time. The mixture decomposes over time to release sulphur and other nasties detrimental to your negative. To make it pH neutral you have to add an acid. Soap is made from animal fat and hydroxide.
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