The board folding (or analizny) is executed from a tree, has a glass bilateral surface on the one hand white, with another - black color. From each party there is an opening in a side for convenient extraction of grain from a board surface after carrying out the analysis.
The different color scheme (white and black) is necessary for research of grains of different color. For example, it is more convenient to sort wheat on the black party, and a buckwheat - on white.
It is intended for use in laboratories of the hlebopriyemny and grain processing enterprises, and also research laboratories, etc.
The board is used for carrying out such laboratory analyses as definition of weed and grain impurity of grain (State standard specification 30483-97), contamination (GOST 13586.4-83, 13586.6-93), steklovidnost (State standard specification 10987-76), mass of 1000 grains (State standard specifications 10842-89), contents of fuzariozny grains (State standard specifications P 51916-2002) and many other analyses.