An ISO 9001-2000 certified company, Optics Technology is the foremost manufacturer and exporter of various types of laboratory testing equipments. Digital Automatic Tap Density Test Apparatus is specially designed to meet the requirements of USP Standards. It is capable to hold two cylinders, capacity: 100 ml. The apparatus provides at the same time rotates and tapping motion to the cylinders for packing the sample under test evenly and uniformly together. The user of the machine will just have to select the number of stokes in the counter and other selecting just press start. Thus it will start the stokes and the Digital display shows the number of strokes.