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Bellini Boric Acid - 50g

Bellini Boric Acid - 50g - Main image
$9 $12 In stock

Category: Film & Film Processing Raw Chemicals

Boric Acid is used as a fine grain developer additive or a solution buffering agent when used with Borax. It can also be used as an acid fixing bath ingredient. Boric acid and its salts are found in seawater. It is also found in plants, including almost all fruits.


It has a formula of H3BO3

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Customer Reviews (5.0 / 5 · 5 reviews)

Christopher U. ★★★★★

Mixing a tiny pinch of this into my D-76 gave noticeably tighter grain on 35mm Tri-X. The powder dissolves cleanly with no residue, and the 50g bag will last through many batches. Exactly what I needed for finer-grained negatives.

Owen ★★★★★

Fine grain development has been noticeably smoother since I started adding this to my working solution, and it dissolves pretty quickly without any residue. The 50g size is enough for quite a few batches if you're just doing occasional film processing.

Scarlett ★★★★★

I was worried about getting the right buffer for my developer mix, but this powder dissolves perfectly clear with no residue. The 50g size is just enough for my trial runs.