Halo Adjustable Volume Single Channel Pipettor manufactured by MTC Bio features a recessed and cushioned ejector button which dramatically reduces the risk of repetitive stress injury and general shoulder, arm and hand fatigue associated with repeated daily pipetting. The pipettor is designed with a four digit micrometer display for precise volume selection and a click-based adjustment wheel with DriftGuard™ protection. The grooved handle is smooth to the touch, easy to grip, and comfortable for extended pipetting, allowing both hands use.