VJ Tech provides a rugged, no nonsense shaker ideal for onsite and heavy-duty applications that has been specially designed to operate with heavy samples without loss of performance. It is equipped with a dynamic power source, which ensures the right vibration is imparted to the sieves and sample for fast, accurate and reproducible tests. The vertical movement is fixed to ensure the sample spends maximum time seeking apertures rather than being suspended in mid air. The unique vibratory action also helps keep the apertures clear and free from blinding. The timer can be pre-set for any duration up to 60 minutes and the non-corrodible, non-metallic springs fitted, make it virtually maintenance free.