Photographers' Formulary Potassium Bromide (1 lb)

Photographers' Formulary Potassium Bromide (1 lb)

Photographers' Formulary Potassium Bromide (1 lb)

B&H # PHPBLBX MFR # 10-0930 1LB
Photographers' Formulary Potassium Bromide (1 lb)

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Product Highlights

  • Helps to Prevent Fog During Development
  • Commonly Used as a Restrainer
  • Reduces Contrast, Provides a Warm Tone

Weight: 1 lb

1 lb 100g 10g wfzcsqffxbvfx

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Photographers' Formulary 10-0930 1LB overview

  • 1Description

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
Table of Contents
  • 1Description

Photographers' Formulary 10-0930 1LB specs

Synonyms Bromide
Bromide of potash
Bromide of potassium
Bromide salt of potassium
Appearance White, deliquescent, granular powder
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 1 lb / 453.6 g
Packaging Info
Package Weight 1.15 lb
Box Dimensions (LxWxH) 4.9 x 3.1 x 3.0"

Photographers' Formulary 10-0930 1LB reviews

Potassium Bromide (1 lb) is rated 5.0 out of 5 by 3.
Rated 5 out of 5 by from Excellent value restrainer 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.
Date published: 2012-01-16
Rated 5 out of 5 by from Requires Mortar & Pestle 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.
Date published: 2014-11-30
Rated 5 out of 5 by from Everything was as it should be. used it for anti fog warmth, and a touch more contrast in paper developer. It worked as it should.
Date published: 2014-06-27
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