Mixing Temperature

Mick Fagan said:

I have never heard of that developer, so I did a search and found out what I think it is. A powdered Fuji developer similar to Ilford Microphen, although I have no way to find out if that is true.

Essentially, the idea is to dissolve the developing chemicals, which in this case is in a powder form, in the correct sequence as marked. This is usually marked Part "A", Part "B" and so on. Meaning you would dissolve part "A" first, followed by the next and so forth until you have no more parts to dissolve.

Generally speaking, you would place part "A" in the water, stir until there is no more solids. Sometimes there are really tiny bits left over, even after say 10 or so minutes. That being the case, I just add the next component, stir and mix until that is dissolved and so on.

I use a Patterson chemical stirrer, or chemical mixer. Very simple and works very well. One can use the flat bottom to crush bits of solid to help the powder to dissolve, the flat part of the shaft with the slotted holes really mixes and/or stirs the solution very well. I've had one of these for probably around 40 years. They only cost a few dollars, but I do realise you may not have access to one in your country. The internet could be your friend here.

https://www.google.com/search?q=pat...AUIDygC&biw=1536&bih=710#imgrc=VTipq7uoMWF3WM:

I then place the mixed developer, often called a "Stock Solution" into some glass jars, using glass marbles to reduce or eliminate air at the top. I place the stuff on a shelf until I wish to use it.

When comes the time to use it, I always filter the stored solution(s) via a coffee filter.

I then mix my filtered stock solution with the correct amount of water straight from my unfiltered tap and away I go. I've been doing this more or less for the last 50 years, although I didn't have coffee filters in the early days.

I would say that you are perfectly alright.

Sounds like an interesting developer, please tell us how it goes.

Mick.

Edit: The glass jars I use are in fact old jam jars from the grocery store cleaned with some very hot water; these work very well and essentially cost me nothing.

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koraks said:

Let it sit for a while. The remaining stuff may dissolve fine. Higher temperatures speed up the process, but a few days of patience may do the trick as well. Some stuff dissolves a little more harder; phenidone in the form of small flakes for example. You don't want to filter much stuff out as it means your developer isn't balanced the way it should. Particularly phenidone is present in small amounts so filtering even a little phenidone out may have consequences.

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koraks said:

Ideally in a container that can be closed airtight with not much air above it if it's going to be several days.

Letting it sit for an hour in the mixing jar isn't likely to do much if the stuff didn't dissolve immediately in the first place.

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eatfrog said:

I've mixed and used super prodol. Don't worry, you can use the developer at once. The specs will dissolve.

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