Gilson Testing Screen, Test-Master®, and Porta-Screen® units have been industry standards for decades, and are in wide use all over the world. With screen areas much larger than Round Test Sieves, they quickly separate large, coarse-grained samples into six or seven fractions for accurate and efficient gradations. Screen Trays with ASTM or ISO testing grade wire cloth or steel Punched Plate are available.
TS-1 Gilson Testing Screen uses a quick-acting hydraulic pump system to clamp the screen trays in place. Trays are quickly released using the same handle. This more efficient model is recommended for labs with a steady workload of particle size testing.
TM-5 with six-screen tray capacity, and seven-tray TM-6 units feature the same reliable counterbalanced drive assembly, fully enclosed operation and electronic digital controller as our previous models. Sample vibration characteristics are identical to our TS-1 and TS-2 models and the Screen Trays are interchangeable. Internal rotating counterweights of the Test-Master® drive system equalize the vertical screening action to assure smooth, quiet operation and prevent transfer of vibrations to other lab instruments.
Test-Master® accessories and options allow greater versatility for processing a wider range of materials. Standard vibration characteristics are designed for coarse materials of mid-range density such as limestone or gravel.
We offer frames with square perforated plates to fulfill the EN-standard (photo no.2 below).