QUICK! HELP

[RAP]

How do I make up a 10% solution of potasium bromide from a powder? Is it 1 gram/100ml water?

[Jorge Oliveira]

No, 10g/100ml water.

Since 1ml water=1g, 1g/100ml would be 1%.

Jorge O

[RAP]

GOD BLESS PHOTOGRAPHER"S FORMULARY! THEY HAD THE ANSWER!

10 grams/100ml!

[RAP]

THANKS JORGE!

[RAP]

The reason I was so anxious this afternoon was that I had run out of benzotriazole and the only thing I had as a substitute was potassium bromide, KBr. But I had forgotten what the ratio was for a simple 10% solution. WHAT A DUMMY!

I called Kodak and suffice it to say, they were no help. The rep has not called with the answer as he said he would. He questioned me where I heard of KBr and I said that AA's "The Print" had it listed as an anitfog chemical. He said, "why don't I ask him?" I said that I do not talk with the dead.

I called Calumet and they said they had discontinued the Zone VI bottled benzotriazole, because of the proliferation of the "D" word.

So I called Photographer's Formulary. The girl who answered, the receptionist, knew the answer! Maybe she wasn't the receptionist but I was very very impressed! She had it right on the tip of her tongue.

Suffice it to say, I am a Photographer's Formulary customer from now on!

BTW, they do sell powdered benzotriazole.

[David A. Goldfarb]

The Kodak response is brilliant.

[Jorge Oliveira]

I've been using benzotriazole in place of Kbr for decades.
Does any one remembers Kodak Anti Fog n. 1 in pills?

man, I'm THAT old!

Jorge O

[RAP]

Apparently so am I. I remember the Kodak pills from 20 years ago. I had some but never used them and ended up throwing them away. I used the Zone VI for years but now Calumet discontinued it.

[David A. Goldfarb]

I remember those pills, too, but I never used them myself. I've been using Edwal Liquid Orthazite lately as a restrainer, which is a solution of benzotriazole and sodium sulfite.

[Aggie]

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