Diamond Pro Pipettor with Adjustable Volume, Push-button Tip EjectorDiamond PRO Research micropipettes are designed with super soft thermo plastic elastomer grips that minimize fatigue of hands and fingers. The unique padding not only reduces thumb stress, but also minimizes the transfer of body heat to the pipette, resulting in consistant accuracy. All Diamond pipettors come with a certificate of calibration, a recalibration tool kit and a full one year warranty. High accuracy and precision guaranteed. Streamlined