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Potassium Dichromate - Uses - Photography
- https://www.liquisearch.com/potassium_dichromate/uses/photography
- Photography. Potassium dichromate has important uses in photography and in photographic screen printing, where it is used as an oxidizing agent together with a strong mineral acid. Gum bichromate printing was one of the very first stable photographic printing processes, dating back to about 1850. A solution of gum arabic and potassium ...
Potassium bichromate (Photography) - Definition - Lexicon
- https://en.mimi.hu/photography/potassium_bichromate.html
- Potassium bichromate - chemical used in chrome intensifiers. Potassium bromide - chemical used as a restrainer in most developing solutions and as a rehalogenizing agent in bleaches. Potassium carbonate - highly soluble alkaline accelerator used in most general purpose and print developing solutions.. In this process a regular silver gelatin print is made, then bleached in a …
Photographers' Formulary Potassium Dichromate 100 …
- https://www.amazon.com/Photographers-Formulary-Potassium-Dichromate-grams/dp/B000B73OBO
- Photographers' Formulary Potassium Dichromate 100 grams Brand: Photographers' Formulary 20 ratings | 3 answered questions Currently unavailable. We don't know when or if this item will be back in stock. Customers who viewed this item also viewed Page 1 of 1 Start over Potassium Dichromate 0.100 Normal Quart (950 mL) 8 1 offer from $29.99
POTASSIUM BICHROMATE | CAMEO Chemicals | NOAA
- https://cameochemicals.noaa.gov/chemical/4305
- Potassium bichromate: 7778-50-9: 10 pounds: 313c: 313c indicates that although not listed by name and CAS number, this chemical is reportable under one or more of the EPCRA section 313 chemical categories. & indicates that no RQ is assigned to this generic or broad class, although the class is a CERCLA hazardous substance. See 50 Federal ...
Gum bichromate working methods
- https://www.alternativephotography.com/gum-bichromate-working-methods/
- I use a 5% solution of potassium dichromate which is reasonably fast for daylight conditions in Texas where I print. If you can manage with a dilute solution similar to that, you will save money and waste. However, feel free to use a saturated solution which is around 12-13% for potassium, if you need the additional strength.
Potassium dichromate - Wikipedia
- https://en.wikipedia.org/wiki/Potassium_dichromate
- Potassium dichromate, K 2 Cr 2 O 7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications. As with all hexavalent chromium compounds, it is acutely and chronically harmful to health. It is a crystalline ionic solid with a very bright, red-orange color.
Gum Bichromate Process - New Old Photography
- https://platinumprince.com/history-of-processes/2019/4/10/gum-bichromate
- The gum bichromate process came into its own and was embraced by the Pictorialists somewhat later. It was viewed by its greatest proponents, such as Robert Demachy and Alfred Maskell as a process that helped add artistic texture to a print; it can give the effect of a painting or of a charcoal drawing.
gum bichromate printing/photography. Beguin. - Polymetaal
- https://www.polymetaal.nl/beguin/mapg/gum_bichromate_photography.htm
- Creating a gum (or gum bichromate) print involves applying an emulsion of watercolour and gum arabic, combined with an ammonium, or potassium dichromate sensitiser onto sized paper. After drying, the emulsion is exposed by contact with a UV light source. Available sources include; sunlamps, UV BL fluorescent tubes, Mercury
Background to Bromoil - Gavin Lyons Photography
- https://gavinlyons.photography/background-to-bromoil/
- Bromoil was one the favourite and beloved processes of the pictorialists and salon exhibition photographers during the first half of the 20th century. No show of the photographic art of the pictorialists was without lovely, soft and painterly Bromoil prints. A Scotsman by the name of Mongo Ponton, discovered that the chemical Potassium dichromate was…
Darkroom Safety - nontoxicprint
- https://nontoxicprint.com/safetyinphotography.htm
- Potassium Bichromate, the widely used staple ingredient of Alternative Photography is highly toxic and is known to cause cancer Potassium Ferricyanide, the main ingredient in Cyanotype printing is now used in large quantities by artists and in art schools. A common misconception, also supported by some chemists, suggests ferricyanide to be a
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