Use pipette tip #3305R or 3305R. Globe’s 8-Channel Diamond PRO Research micropipettes offer the ultimate in comfort, accuracy and precision. A 360° rotating manifold provides universal right or left hand use. Utilizing our super soft thermo plastic elastomer grips, fatigue of the hands and fingers is minimized. 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.