Gilson’s MD-2000 Micro-Deval Apparatus is a second generation, state-of-the-art machine. A sophisticated electronic controller with optical sensing system accurately tracks test time, total revolutions and rpm of jars. Test duration may be controlled by either elapsed time or total revolutions. Jars stop within a fraction of one revolution at test termination. Jar revolution and speed data may also be used as a verification of machine performance. The jars revolve behind closed Lexan™ doors with safety interlocks so no moving parts are exposed during operation. The Micro-Deval machine is a two-tier unit with a sturdy steel frame. Each tier carries one stainless steel 5L jar, 194mm ID, 170mm internal height with locking cover. Power to the rubber-covered rollers is supplied by a 3/4hp electric motor through a gear transmission and chain drive.