Spot plate

A detection reaction carried out on a spot plate: the iodine sample .

In the chemical laboratory, spot reactions (color reactions or precipitation reactions) are carried out in a semi-micro procedure on a spot plate , also known more rarely as a test plate . Spotted plates are usually made of porcelain (white or black), glass or polypropylene and contain well-like depressions on the surface.

use

In materials testing , wastewater analysis , environmental protection , forensic chemistry , pre-samples in mineral analysis and many other chemical-analytical issues, spot plates are used, especially for the detection of heavy metal ions through spot reactions. They are also used for staining specimens in microscopy or for sorting small samples. Even with qualitative rapid tests for narcotics, the substance is usually allowed to react with the reagent on a spot plate.

See also

List of detection reactions

Individual evidence

1. ^ Gerhard Meyendorf: Laboratory equipment and chemicals. People and Knowledge, Berlin 1965, p. 61.
2. ↑ Otto-Albrecht Neumüller (Ed.): Römpps Chemie-Lexikon. Volume 6: T-Z. 8th revised and expanded edition. Franckh'sche Verlagshandlung, Stuttgart 1988, ISBN 3-440-04516-1 , pp. 4388-4389.