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Ferrous sulfate is mainly used as a precursor to other iron compounds. It is a reducing agent, and as such is useful for the reduction of chromate in cement to less toxic Cr(III) compounds. Historically ferrous sulfate was used in the textile industry for centuries as a dye fixative. It is used historically to blacken leather and as a constituent of ink. The preparation of sulfuric acid ('oil of vitriol') by the distillation of green vitriol (Iron(II) sulfate) has been known for at least 700 years.
Ferrous sulfate is mainly used as a precursor to other iron compounds. It is a reducing agent, and as such is useful for the reduction of chromate in cement to less toxic Cr(III) compounds. Historically ferrous sulfate was used in the textile industry for centuries as a dye fixative. It is used historically to blacken leather and as a constituent of ink. The preparation of sulfuric acid ('oil of vitriol') by the distillation of green vitriol (Iron(II) sulfate) has been known for at least 700 years.
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Ferrous Sulphate Anhydrous
From £850 £1387
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The Sodium Acetate is the anhydrous form of acetic acid, which is used as a buffer for acetic baths. The Sodium Acetate is commonly used together in toning baths and as a retarder in hydroquinone developers.
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Sodium Acetate 500g
£900 £1218
The historical photography process of gum bichromate photography uses gum arabic mixed with ammonium or potassium dichromate and pigment to create a coloured photographic emulsion that becomes relatively insoluble in water upon exposure to ultraviolet light. In the final print, the acacia gum permanently binds the pigments onto the paper.
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Acacia Gum/Gum Arabic 100g
£1000 £1800
Other Names: Concentrated alum, Paper-maker's alum, Sulfate of alumina Appearance Pale green to white in color and is available in powdered and granular forms Uses Can be used as a substitute for alum as a hardener (ratio = 2 parts aluminium sulphate as a substitute for 3 parts alum). Chemical Formula Al2(SO4)3 . 14H2O
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Ammonium Alum
From £700 £880
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Bellini Antifog Paper 1-Fenil-5-Mercapto-Tetrazole 5gg
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Bellini Antifog Agent 5G 1-Phenyl-5-Mercaptotetrazole
£1000 £2000
Bellini Pyrocarechin/Catechol 100g Catechol Pyrocatechin, also known as Pyrocatechin and Pyrocatechol, is used as a developing agent for film or paper. It gives warm black images, with rapid development and high contrast. Pyrocatechin also acts as a tanning developer, which stains (actually fogs) the negative and also hardens the emulsion protecting it from reticulation.
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Bellini PyroCatechol 50g.
£2000 £3600
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Calgon 500g
£650 £876
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Ferric Ammonium Sulphate 100g
£850 £1164
The Photographers Ascorbic Acid is used as a photographic developing agent and as a preservative.
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L Ascorbic Acid 25g
£375 £420
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Potassium Aluminium Sulphate 500g
£1800 £2640
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Potassium Iodide 100g
£900 £2520
Synonyms: Citrosodine Trisodium Citrate 2-hydroxy-123-propanetricarboxylic acid, trisodium salt, dihydrate Sodium Citrate Dihydrate
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Sodium Citrate 100g
£900 £1457
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Sodium Hydrogen Phosphate 100g
£900 £1178
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Sodium ISOAscorbate 25g
£650 £1018
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Syringe - BULK PACKS
From £375 £420
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OnBalance Truweigh Miniscale 600g x 0.1g(TW-600-SL)
£650 £1100