ZX4 Vortex mixer featuring the highly innovative and patented IR technology to reduce repetitive strains. IR sensor and Continuous mode available. ■ Vibration starts when tube is detected by IR (VELP patent) ■ IR sensor and continuous modes ■ Variable speed operation, electronically controlled up to 3000 rpm ■ Optimum resistance to chemicals from technopolymer casing ■ Excellent stability with zinc alloy base ■ IP 42 protection against particles and liquids ■ No fatigue as no pressure is required