Rohrer & Klingner
REF
Very fine bitumen powder used for aquatint and lithography. Once heated, it forms a partially acid-resistant ground, allowing the creation of subtle tonal ranges and rich textures on copper or zinc plates.
Available in 250g bags.
Rohrer & Klingner is a German company founded in 1892, specializing in inks and fine art materials. A trusted name among printmakers, lithographers, and art schools throughout Europe.
See also the definition in the Technical dictionary of printmaking by André Béguin, which describes bitumen as a traditional grain resist, known for its greasier texture than rosin.
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