B&w slide tried and true process

Quote:

---

Originally Posted by Ian Grant

The Permanganate should be acidified with Sulphuric acid.

---

Not necessarily.
Any strong acid would do.
Sulphuric is recommended only because it's readily available.

Quote:

---

Originally Posted by wildbill

I'm in search of the chemicals for the above process but i want to make sure i'm getting the right SODIUM BISULFATE. Artcraft doesn't have it listed and i've only found it at two places that want about $40 per 125grams. Does this sound right? That seems pricey when i'd need 1/3 or that for a batch of bleach. Can someone post a link to a source? Is this something i can get at a pool supply store?
vinny

---

Soudium Bisulfate it's available as a Ph minus from any shop that sells pool chemicals.

Quote:

---

Originally Posted by Alessandro Serrao

Not necessarily.
Any strong acid would do.
Sulphuric is recommended only because it's readily available.

---

Not at all true, if you use Hydrochloric Acid you will re-halogenate the silver developed in the first developer and then this will be exposed and developed again.

Ian

Quote:

---

Originally Posted by Ian Grant

Not at all true, if you use Hydrochloric Acid you will re-halogenate the silver developed in the first developer and then this will be exposed and developed again.

Ian

---

Good to know.
I'm only developing by trial and error.

Are there any convenient sources of sulfuric acid that are available possibly locally without having to source it through a chemical supply house?
Is muriatic acid a possible substitute?

I should have RTFM, muriatic acid IS hydrochloric acid. Ooops.

Sodium Bisulfate, when dissolved in water becomes a complex of sulfuric acid and sodium sulfate. I use it successfully in my bleach. I find it easier to handle, measure, clean up, etc.

You can find some at a pool supply store. It is sometimes sold as "pH down".

Thanks for the heads up. Not that I have anything to hide from the DEA but I find that filling out that form and subjecting myself to their scrutiny would not be worth it in the least for 100ml of sulfuric acid.


Thanks again!

You can buy sulfuric acid at an auto supply shop. They keep it behind the counter. It is used to top off lead-acid batteries. Just figure out the concentration and dilute down.

BTW, I wouldn't concern yourself with the DEA form. Do you know how many people fill those out every day? You are a grain of salt in the ocean.

Quote:

---

Originally Posted by amuderick

You can buy sulfuric acid at an auto supply shop. They keep it behind the counter. It is used to top off lead-acid batteries. Just figure out the concentration and dilute down.

BTW, I wouldn't concern yourself with the DEA form. Do you know how many people fill those out every day? You are a grain of salt in the ocean.

---

I agree.