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Film dev chem general

Anonymous Tue 14 Feb 2023 06:29:37 No.4140809 View View Reply Original Report

Quoted By: >>4140908 >>4140920 >>4140921 >>4140927 >>4140937 >>4140970

Post your dev tips here and ask questions

>Q1
how long can chems last in their containers after opening? I've had a box of b&w chems in the garage for over a year or so will they still be fine?

fe2fucker

fe2fucker Tue 14 Feb 2023 09:30:58 No.4140892 Report

Quoted By:

I mixed up a batch of the digibase 1 liter c41 kit a year ago and it still works fine.

My main black n white chem is a bottle of rodinal from the 70's with huge crystals in it that i shake into suspension before each dev and it works perfectly fine too.

Anonymous

Anonymous Tue 14 Feb 2023 09:36:45 No.4140896 Report

Quoted By: >>4140908

anyone have any tips for BW processing C41 film?

I have mountains of shit-tier C41

Anonymous

Anonymous Tue 14 Feb 2023 10:10:12 No.4140908 Report

Quoted By: >>4141158

>>4140809
Rodinal can last decades, ilfosol on the other hand seems to go bad within weeks of opening.

>>4140896
Save it to sell it on eBay, c41 is getting stupid expensive.

Anonymous

Anonymous Tue 14 Feb 2023 10:56:14 No.4140920 Report

Quoted By:

>>4140809
>still works fine
Press x to doubt

Compare the mask of film developed now and a year ago

Anonymous

Anonymous Tue 14 Feb 2023 10:57:03 No.4140921 Report

Quoted By:

Is the Jobo lift worth it for anything other than C-41? The time taken to pour chemistry is so small compared dev times in b+w and e6 that I dunno if it's gonna be a waste of money

>>4140809
do a clip test on your film leader if you're unsure about developer activity. But generally anything that's mega discoloured or has precipitates that won't go back into solution is fucked

Anonymous

Anonymous Tue 14 Feb 2023 11:59:26 No.4140927 Report

Quoted By: >>4141160

>>4140809
I have 2 year old Ilfosol stored appropriately and can confirm it no longer devs

Anonymous

Anonymous Tue 14 Feb 2023 12:20:49 No.4140928 Report

Quoted By:

i've only just started doing my own development mostly because the local lab i used to go to shut down during corona
adonal and adofix plus
are there any fixers with longer shelf life, especially after being opened?
and just for the sake of it, how much silver could you practically extract from exhausted fixer? probably not worth it at all if all i have is the fixer i myself produce

Anonymous

Anonymous Tue 14 Feb 2023 13:24:57 No.4140933 Report

Quoted By:

Make your own rodinal
fuck the haters

Anonymous

Anonymous Tue 14 Feb 2023 13:33:54 No.4140937 Report

Quoted By: >>4140965

>>4140809
I hate film so much its unreal.

Anonymous

Anonymous Tue 14 Feb 2023 15:04:49 No.4140965 Report

Quoted By:

>>4140937
Why r u here

Anonymous

Anonymous Tue 14 Feb 2023 15:28:32 No.4140970 Report

Quoted By: >>4140973

>>4140809
Rodinal lasts, most other stock liquids will eventually go bad. Powders may or may not last indefinitely if protected from moisture, heat and light. Cold storage generally helps but many solutions will drop percitipate if stored in cold which may or may dissolve again in room temperature.
t my chems have been in a cold attic whole covid era and I have not dared to check em yet.

Anonymous

Anonymous Tue 14 Feb 2023 15:29:38 No.4140973 Report

Quoted By:

>>4140970
.. may or may not dissolve again ..

Anonymous

View Same Google ImgOps iqdb SauceNAO B541250E-B297-4AFF-B104-1587D1C0 (...).jpg, 2MiB, 4032x3024

Anonymous Tue 14 Feb 2023 16:20:34 No.4140985 Report

Quoted By: >>4140988

Has anyone ever made rodinal? How hard is it , will I get flagged by the fbi for ordering chemicals? Post recipe pls

Anonymous

Anonymous Tue 14 Feb 2023 16:32:16 No.4140988 Report

Quoted By: >>4140993 >>4141143

>>4140985
Ive done PaRodinal, which uses over the counter drug paracetamol / tylenol / whatever it's called in your country as precursor of aminophenol used in rodinal. It works identically like rodinal when you get the concentration right but does not store like real rodinal. And tablet additives are bitch to filter out.
Fun experiment but just buying biggest rodinal or clone bottle you can find makes more sense.
Google "parodinal" for a recipe

Anonymous

Anonymous Tue 14 Feb 2023 16:40:41 No.4140993 Report

Quoted By: >>4141028

>>4140988
Just add some Sodium bisulfate and it would last longer.
For the tablets, just disolve them in warm water and filter it.

Anonymous

Anonymous Tue 14 Feb 2023 18:02:56 No.4141028 Report

Quoted By: >>4141143

>>4140993
Have you actually made it? I think the problem with keeping even with bisulfite is from excessive basicity required to hydrolyse acetaminophen to aminophen. But what do I know, I did my chem labs last millenium.

Anonymous

Anonymous Tue 14 Feb 2023 21:45:18 No.4141143 Report

Quoted By:

>>4140988
>but does not store like real rodinal
I mean, if you isolate acetaminophen, keep oxygen content low, as well as temperature so nothing turns to tar, then it should keep almost identically+due to sodium/potassium acetate the ph of working solution will be a bit lower
>>4141028
regular rodinal is extremely basic too,anon

Anonymous

Anonymous Tue 14 Feb 2023 22:20:44 No.4141158 Report

Quoted By:

>>4140908
>ilfosol on the other hand seems to go bad within weeks of opening.
fuck

Anonymous

Anonymous Tue 14 Feb 2023 22:21:53 No.4141160 Report

Quoted By:

>>4140927
goddamnit, ilfosol is what i have stored

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