Photographers' Formulary Sodium Thiosulfate (Hypo) Penta (Prismatic Rice) - 1 Lb.

Photographers' Formulary Sodium Thiosulfate (Hypo) Penta (Prismatic Rice) - 1 Lb.

Photographers' Formulary Sodium Thiosulfate (Hypo) Penta (Prismatic Rice) - 1 Lb.

B&H # PHSTPLB MFR # 10-1360 1LB
Photographers' Formulary Sodium Thiosulfate (Hypo) Penta (Prismatic Rice) - 1 Lb.

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  • 1Description

Sodium thiosulfate is one of the few know substances that will dissolve silver bromide. As such it is universally used in modern photographic procedures.

In this process known as "fixation," the unexposed silver bromide is dissolved in the sodium thiosulfate by combining with it to form soluble complex thiosulfates of silver and sodium.

UPC: 675152136039
Table of Contents
  • 1Description
Synonyms Antichlor
Hyposulfite of soda
Sodium hyposulfite
Sodium subsulfite
Sodium thiosulfate, pentahydrate
Thiosulfuric acid, disodium salt, pentahydrate
Appearance Large white monoclinic, colorless crystals and powder
Uses In preparation of fixing baths
Ingredient in various reducers
Chemical Formula Na2S2O3.5H2O
Notes Hypo is available in two forms: anhydrous and, more commonly crystalline. Crystalline hypo, when dissolved, lowers the temperature of the water considerably, whereas anhydrous does not.

Always begin with water of at least 90°F/32°C when mixing the crystalline form. Use 64% of the anhydrous salt as a substitute for crystalline hypo.

Packaging Info
Package Weight 1.1 lb
Box Dimensions (LxWxH) 5.1 x 3.0 x 3.0"
Sodium Thiosulfate (Hypo) Penta (Prismatic Rice) - 1 Lb. is rated 4.8 out of 5 by 5.
Rated 5 out of 5 by from Very Satisfied!!!!! I'm an illusionist and was needing to find a way of getting a larger quantity of this chemical. And the price could not be beat! The product I received was just what they said it would be. I will be placing all my orders in the future with B&H as well as refer my photographer friends to them!
Date published: 2014-11-19
Rated 5 out of 5 by from dissolves easily The Sodium Thiosulphate pentahydrate from Photographers formulary dissolves very cleanly and stores nicely. This is a great product if you need pure hypo.
Date published: 2014-05-29
Rated 4 out of 5 by from Sodium Thio maintains a solid fix Sensitivity of the fix is obviously dependent on the solvent. Works just as it should-- price is as cheap as Bostick & Sully..
Date published: 2012-05-08
Rated 5 out of 5 by from works perfectly used the thiosulphate to fix my film after caffenol developing works better and was cheaper than regular fixer
Date published: 2011-03-25
Rated 5 out of 5 by from works great Using this to fix caffenol developed negatives. Works fantastic as a 15% solution.
Date published: 2014-03-04
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