Diamond 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 tip ejector designed for access to narrow necked containers and tubes. Autoclavable tip cone and lower section assembly. Ergonomic, lightweight and soft plunger movement minimizes fatigue. Two step plunger operation allows you to use reverse pipetting technique during.