Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry, in particular for the regeneration of columns for the purification of DNA and RNA; chemicals for use in science, namely, chemicals, chemical solutions, chemical buffer solutions and chemical measured solutions for the regeneration of columns; unprocessed artificial resins, unprocessed plastics; manures; fire extinguishing compositions; tempering preparations and soldering chemicals; chem...