It is composed of a Bunsen pile, which I do not work with bichromate
of potash, but with sodium.
Contract awarded for sodium bichromate
The concentration of organic carbon in soil was determined by the method of potassium bichromate
This form of photographic production involved printing a negative on a medium that contained carbon and other pigments placed on a gelatin base which had been made light-sensitive by being soaked in a bath of potassium bichromate
The 38 members of PhotoZone work with a variety of photographic printing skills, including silver print, platinum/palladium, gum bichromate
and digital production and welcome all kinds of expression such as hand-colored, airbrush, 3-D, collage, HDR and mixed media, whether in portraiture, street photography, nature photography or abstract expression.
COD is the amount of oxygen required to oxidize the organic material (biodegradable or not) of water using an oxidant, the bichromate
Most of the patients showed positive reaction to nickel sulfate (5 cases) and potassium bichromate
The transferring of photographic images onto ceramics by using the gum bichromate
system began in the 19th century.
The works show a wide variety of printing methods including platinum/palladium, cibachrome, cyanotype, gum bichromate
, polaroid image transfers, copper plate photogravure, photopolymer engravings and gelatin silver prints.
When creating the works in this show, Azeroual said he worked with "ultraviolet-sensitive emulsion, made of pigments of the desired tint, Arabic gum and potassium bichromate
Caption: "The Flatiron", 1904 by Edward Steichen Gum bichromate
over platinum print.
The other method of weakening the anthrax germ, developed chiefly by Roux and Chamberland, was to use the chemical potassium bichromate
to oxidize the germ.