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Speed Variation Accessories allow precise control of vibration speed on Gilson Testing Screen and Gilson Test-Master® Testing Screens. Control of vibration speed assures reliable separations of materials with specific gravities different from common mineral aggregates or for materials finer than No. 4 (4.75mm). Both models feature a remotely-mounted digital controller that displays stroke values between 240 and 635 strokes per minute. Speed Variation Accessories can only be factory-installed in Gilson Testing Screen or Gilson Test-Masters® Testing Screens. Please inquire about retrofitting of existing units.
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