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Photographers' Formulary Potassium Bromide (1 lb)

BH #PHPBLBX • MFR #10-0930 1LB
Photographers' Formulary
Photographers' Formulary Potassium Bromide (1 lb)
Key Features
  • Helps to Prevent Fog During Development
  • Commonly Used as a Restrainer
  • Reduces Contrast, Provides a Warm Tone
This is 1 lb 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.
In Stock
$21.95

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Photographers' Formulary 10-0930 1LB Overview

This is 1 lb 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: 675152930033

Photographers' Formulary 10-0930 1LB Specs

SynonymsBromide
Bromide of potash
Bromide of potassium
Bromide salt of potassium
AppearanceWhite, deliquescent, granular powder
Odorless
UsesFog preventer and restrainer in developing solutions
Ingredient in intensifying, reducing, toning, and many other photographic solutions
Chemical FormulaKBr
NotesPotassium 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
Weight1 lb / 453.6 g
Packaging Info
Package Weight1.15 lb
Box Dimensions (LxWxH)4.9 x 3.1 x 3"

Photographers' Formulary 10-0930 1LB Reviews

Requires Mortar & Pestle

By Jake S.
Rated 5 out of 5
Date: 2014-11-30

It is what it says it is. Note that the chemical is shipped in both fine crystalline and ingot form in the same container. You will need a mortar & pestle to grind this into an easily soluble and measurable quantity.

Everything was as it should be.

By timtlc
Rated 5 out of 5
Date: 2014-06-27

used it for anti fog warmth, and a touch more contrast in paper developer. It worked as it should.

Excellent value restrainer

By Matt Shirley
Rated 5 out of 5
Date: 2012-01-16

The crystals are quite variable in size, but if you have a mortal and pestle you can grind them for more accurate weighing. I'm using KBr as a restrainer in caffenol (instant coffee, ascorbic acid, and washing soda) with excellent results.

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