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No one can do a good job without proper tools, and the chemicals can be defined, the tools of the photographer.
This is the weak point of many operators. They work with economic and inferior chemicals, and many do not know the true composition; Not to mention unwanted interferences that can be created between them.
Without an in-depth knowledge of photographic chemistry, the operator cannot reach that level which can be truly defined as art photography.

 

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Product Detail - cod:

DAS - Diazidostilbene 5g

DAS - Diazidostilbene 5g antiche tecniche fotografiche

Price € 11.00
Net Price € 9.00

DAS
Substitute Potassium and Ammonium Dichromate in all techniques using gelatin or albumin. Es. Salted paper; Albumen prints. It is used in all procedures based on: gelatin, methyl cellulose, polyvinyl acetate, casein, albumin.
It should be used in light inattinica given its sensitivity to any light source.
Trade name: DIAZIDOSTILBENE/DAS (4.4 '-DIAZIDOSTILBENE-2.2 '-disulfonic Acid disodium Salt Tetrahydrate)
Storage in the refrigerator is recommended. A preservation of even more years is achieved by storing the product in the freezer.
Small amounts of 2.5% solution ready for short use you can keep them in dark PE bottles.
The DAS contrary to the dichromate is not toxic and carcinogenic.

DAS - Diazidostilbene 5g
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DAS - Diazidostilbene 5g, diazo, diazostilbene, albumen, gelatine, salted paper, oleotype




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