This Glas-Col Multi-Pulse Vortexer 107A 2-Place Rotator Heater Stirrer Vortexer is in real good condition and functions 100%. It came from a local lab that was upgrading equipment. We can accept pay-pal or your credit card. Please email me with any questions Cat # 107A 0616700108. Serial Number, 377422 115 volt Glas-Col's patented pulsing feature is what makes these vortexers stand apart from other mixers. The pulsing action allows the vortex to collapse, before throwing back a full vortex. This time delayed sequence helps to join the upper and lower strata for more thorough and reproducible mixing. On/Off switch (power and pulse) Toggle clamp for securing deep well plates Variable speed. Track Page Views With Auctiva's FREE Counter