The VT operates on the reciprocating cam principle. The intensity of the vibration can be adjusted by changing the speed of the Drive Unit. Available Sieve Sets include: Sieve Set comprising 9 sieves acc. to DAB and EP, 31cm (VS) ditto., sieves made of stainless steel (VS/S) Sieve Set comprising 4 stainless steel sieves acc. to ISO 565/ 3310-1 (PS/S). Other sieves are available on request.