FIELD: chemical engineering. SUBSTANCE: device has growth chamber and heating member mounted in the chamber, the heating member having the form of unclosed ring, container with a holder and drive for moving the container with a lead screw and nut. The container holder is fastened with a nut of the drive and is placed in the heating member slit. An additional container is mounted at some distance along the direction of container movement. EFFECT: controllable growth of crystals. 2 cl, 3 dwg
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