Rodinol to D 23

[Kiwi7475]

I just mixed some up the other day from Artcraft chemicals. The hard part might be finding distilled water!

Not hard to distill water at home....

https://home.howstuffworks.com/green...lled-water.htm

[Tin Can]

I bought the 2 chems, plenty of it. I have 30 gallons distilled and starting rain collection.

You are buying D23 by photographers formulary from B&H? If you buy the two chemicals from aircraftchemicals it costs 44cents to develop an 8x10 sheet (500 ml). That’s treefiddy for 4L. B&H sells 4L of PF’s D23 for $19.95.

[David Schaller]

Not hard to distill water at home....

https://home.howstuffworks.com/green...lled-water.htm

Thanks, if I get desperate.... But I’m hoping that the supermarket will get restocked.

[Jim Noel]

I have never worried about distilled water for D-23.
If tap water is dirty, filter through a coffee filter

[Jim Noel]

Yeah, just buy the constituents. It's so cheap and easy to mix.

Jim, do you mean it stores a long time, or do use it replentished?

I plan to follow Michael's practice and use it to develop xray film in hangers.

I have never replenished it. It is great with x-ray film.

[Peter De Smidt]

Thanks, Jim.

[Tin Can]

Perhaps the question is. What is the reuse duration of D 23?

Ilford PQ at 1/9 is reusable on prints for a while. At 1/19 on film I one shot it, meaning one use and dump.

Rodinal stops working after 20 minutes and is definitely 'one shot'

If a print does not develop we make another, film is one chance

I have never replenished it. It is great with x-ray film.

[Bernard_L]

starting rain collection

Rainwater is not so "pure".
It is loaded with the dust & aerosols collected in the atmosphere. Which is why the air is so pure after a rainfall.
It is loaded and acidic with atmospheric CO2, which is how limestone is etched away in karstic landscapes.

[Tin Can]

I am aware

Rain water is still valuable for many uses

Here I now get 46" a year, collecting it will be easy, storage is the problem

Gravity toilet comes to mind, which works even without city water, which often fails here

I also plan to filter it and distill small amounts

Rainwater is not so "pure".
It is loaded with the dust & aerosols collected in the atmosphere. Which is why the air is so pure after a rainfall.
It is loaded and acidic with atmospheric CO2, which is how limestone is etched away in karstic landscapes.

[HMG]

Interesting.

What's the logic for needing distilled water (noting that Jim Noel doesn't use distilled water)? I'll admit I use distilled water for mixing powder developers but I do that more out of "an abundance of caution" rather than knowledge.

And, if your water source is not as clean as tap water, would a water filter such as this be helpful? These have been converted to gravity filters so, while slow, no pumping or squeezing.

Ken Lee's page describes D-23 as slower acting than D-76 due to the lack of Hyrdoquinone. But then says "Developing times for D-23 are similar to those of D-76". Is this an inconsistency or am I not giving enough weight to "similar"?

Finally, does sodium sulfite (powder) have a shelf life?