How Hot the Water to Raise Developer Temperature Quickest?

snusmumriken · May 8, 2022

bags27 said:
When trying to warm up developer quickest, does it matter if the surrounding water is much hotter than the targeted temperature or just the temperature that I want the developer to get at?

Are you are wondering whether the chemicals will be damaged? In my experience, no. I frequently use a water bath at about 60 or 70 deg C to heat chemicals from mains water temperature (less than 10 deg C in winter) to 22 deg C. I have the chemicals in plastic beakers, which hold very little heat themselves, and the water bath in a plastic washing-up bowl. I do 'watch the thermometer like a hawk' as someone said above, and stir constantly. I also have a water bath at the target temperature ready, and simply lift the beakers across when they reach the target temperature. If I use a stainless steel beaker instead, heating is quicker but it is necessary to make the move well before the target temperature is reached, as the beaker itself holds a lot of heat.

Down Under · May 8, 2022

Bags27, if this is the worst conversation you and spouse have had in your almost 42 years together, then you have a pretty good marriage...

Temperature control, of house/apartment, rooms, body and things photographic, is by large the first and foremost reason why I "abandoned" Canada in the early '70s and moved to Australia. Here in the bush, our problems are usually the opposite - cooling things down, a complete reversal of your "problem" process. Either costs money, which I reckon is the defining factor in both businesses.

The solution to keeping your process temperatures regulated and even, which I had until 2002 or 2003, is to buy a Jobo. Look for a secondhand one in good condition, or even better, a Jobo Duolab, which is about the simplest that company made and (usually) not too expensive to buy. You will never, ever look back on temperatures, your results will be entirely even throughout, and you will rejoice.

Otherwise, this thread has been interesting, also very amusing in parts. It's good to see we still have a sense of humor and find things to joke and laugh about in these crazy Covid times...

Sirius Glass · May 8, 2022

ozmoose said:
Bags27, if this is the worst conversation you and spouse have had in your almost 42 years together, then you have a pretty good marriage...

Temperature control, of house/apartment, rooms, body and things photographic, is by large the first and foremost reason why I "abandoned" Canada in the early '70s and moved to Australia. Here in the bush, our problems are usually the opposite - cooling things down, a complete reversal of your "problem" process. Either costs money, which I reckon is the defining factor in both businesses.

The solution to keeping your process temperatures regulated and even, which I had until 2002 or 2003, is to buy a Jobo. Look for a secondhand one in good condition, or even better, a Jobo Duolab, which is about the simplest that company made and (usually) not too expensive to buy. You will never, ever look back on temperatures, your results will be entirely even throughout, and you will rejoice.

Otherwise, this thread has been interesting, also very amusing in parts. It's good to see we still have a sense of humor and find things to joke and laugh about in these crazy Covid times...

In the 1960's I developed a few rolls of Ektachrome in the basement sink. I never bothered to develop color until I joined APUG and learned about Jobo processors. I found that not only could I easily develop color film, but then I discovered that developing black & white film more easily in the Jobo processore and the black & white Jobo development is much more consistent than with steel tanks. It has been an investment that keeps paying for itself.

ic-racer · May 9, 2022

Look up Newtonian heating and cooling. Too bad, theoretically, the two never reach the same temp

Saganich · May 9, 2022

I've had to do this a lot over the years and stopped using overly hot or cold water because nearly every time I would overshoot the target (thereby spending even more time). It doesn't take too much longer to use a water bath at the temp you want or slightly higher.

wiltw · May 9, 2022

ic-racer said:
Look up Newtonian heating and cooling. Too bad, theoretically, the two never reach the same temp

That must be why Newton didn't do any color photography!...too much worry about process control

How Hot the Water to Raise Developer Temperature Quickest?

snusmumriken

Down Under

Sirius Glass

ic-racer

Saganich

wiltw

Privacy & Transparency

Privacy & Transparency