Partial Mixing of Tetenal/Unicolor Press Kits

[laroygreen]

Hey guys,

About 1 month away from starting to develop my own colour (c-41) film, but there is something I'm trying to figure out.

Because of where I live, only the press kits make sense (due to restrictions on shipping chemicals by air), and I was thinking of buying the 2L (its cheaper due to shipping costs here) Tetenal kit, but the instructions are basically for mixing the entire thing into 1 2Litre solution. I doubt I'll process more than 5 rolls of 120 in a month, so mixing so much chemistry at once would be a big waste as it would most certainly go bad before I could make use of it.

Is there a way to mix enough to produce 500ml of solution and then storing the rest of the powder until needed? I guess I could just divide the contents of each packet into 4 equal parts (how would I measure that though, is it by weight or something ), and then use 400ml of water?

Also, is it advisable to store powder chemicals long term?

Hope my question is clear, and thanks for the help!

[Sirius Glass]

While cost is not a problem for me, when I have 12 rolls of 120 C-41 film or the 4"x5" equivalent I mix the Unicolor kit and process all the film in 24 hours. The Unicolor kit states 8 rolls and the instructions state that 12 rolls can be done within three days with the appropriate caveats.

Steve

[minesix66]

Use a digital scale. And measure out accordingly in proportions. You shouldn't have a problem. I prefer the liquid chemicals.

[laroygreen]

Thanks for the replies. How accurate of a scale would I need? The price for scales vary a lot depending on how accurate the scale is, and how long can I store powder chemicals?