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Photographers' Formulary Potassium Bromide (100g)

BH #PHPB100GX • MFR #10-0930 100G
8 reviews
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Photographers' Formulary Potassium Bromide (100g)
Key Features
  • Helps to Prevent Fog During Development
  • Commonly Used as a Restrainer
  • Reduces Contrast, Provides a Warm Tone
This is 100g of Potassium Bromide from Photographers' Formulary. It is commonly used as a restrainer in developers, especially those containing hydroquinone, pyrocatechin, or pyrogallol, and helps to prevent fog during development. When used in paper developers, it also reduces contrast and provides a warming effect. Additionally, potassium bromide is used as an ingredient in intensifying and reducing toners, as well as a variety of other photographic solutions.
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Photographer ' Formulary 10-0930 100G Overview

This is 100g of Potassium Bromide from Photographers' Formulary. It is commonly used as a restrainer in developers, especially those containing hydroquinone, pyrocatechin, or pyrogallol, and helps to prevent fog during development. When used in paper developers, it also reduces contrast and provides a warming effect. Additionally, potassium bromide is used as an ingredient in intensifying and reducing toners, as well as a variety of other photographic solutions.

UPC: 675152930026

Photographer ' Formulary 10-0930 100G Specs

Synonyms
Bromide
Bromide of potash
Bromide of potassium
Bromide salt of potassium
Appearance
White, deliquescent, granular powder
Odorless
Uses
Fog preventer and restrainer in developing solutions
Ingredient in intensifying, reducing, toning, and many other photographic solutions
Chemical Formula
KBr
Notes
Potassium bromide is the most commonly used restrainer in developing formulas, especially those using hydroquinone, pyrocatechin, or pyrogallol. The addition of potassium bromide usually results in a reduction of contrast and can have a warming effect on image tone when used in paper developers
Weight
3.5 oz / 100 g
Packaging Info
Package Weight
0.28 lb
Box Dimensions (LxWxH)
4 x 2 x 2"

Photographer ' Formulary 10-0930 100G Reviews

Part of caffenol developer formula

By Addison
Rated 4 out of 5
Date: 2023-05-12

Haven't used it yet as I still need pure vitamin C without the citrus flavoring but looking forward to giving caffenol a try. The formulas I have found reccomend a gram of Potassium Bromide for higher speed films. Glad Photographer's Formulary makes it, along with other chemicals, and that B&H carries it.

Ingredient for Caffeinol developer experiments

By Joseph
Rated 4 out of 5
Date: 2021-08-23

I'm not equipped to assay purity, and I don't know how else one could meaningfully review a chemical... The price didn't seem unreasonable.

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