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Photographers' Formulary Potassium Bromide - 1 Lb.

B&H # PHPBLBX Mfr # 10-0930 1LB
In Stock
Free Expedited Shipping on Orders over $49
You Pay: $9.95
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

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Photographers' FormularyPotassium Bromide - 1 Lb.
 
5.0

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (0)

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Pros

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      Best Uses

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          • No (3)

        Reviewed by 3 customers

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        5.0

        Requires Mortar & Pestle

        By Jake

        from Fairbanks, Alaska

        About Me Photo Enthusiast

        Verified Buyer

        Pros

        • Conistent

        Cons

        • Requires Pulverizing

        Best Uses

        • Caffenol
        • Developing

        Comments about Photographers' Formulary Potassium Bromide - 1 Lb.:

        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.

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        5.0

        Everything was as it should be.

        By timtlc

        from Cold Spring, NY

        About Me Pro Photographer

        Verified Buyer

        Pros

          Cons

            Best Uses

            • Developing

            Comments about Photographers' Formulary Potassium Bromide - 1 Lb.:

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

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            (1 of 1 customers found this review helpful)

             
            5.0

            Excellent value restrainer

            By Matt Shirley

            from Baltimore, MD

            About Me Photo Enthusiast

            Verified Buyer

            Pros

            • Cheap
            • Effective
            • Pure

            Cons

            • Clumpy

            Best Uses

            • Darkroom

            Comments about Photographers' Formulary Potassium Bromide - 1 Lb.:

            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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