An important patented feature of our air displacement pipettor heads is the ability to blow low air pressure through the tip orifice under program control.  We refer to it as a "Timed Dispense."

With the Timed Dispense function you clear the tips contents without touching the liquid in the plate.  This function allows you to add the same reagent to multiple plates on the shuttle without contaminating the tips.

The Timed Dispense function is of extreme importance if you are pipetting both aqueous and organics.  You can clear the organic vapors with a timed dispense function, and then pipette aqueous accurately.  Competitive designs must stop and change tips when going from organic to aqueous pipetting.

The Quadra4 operates through an intuitive and flexible Graphical User Interface on top of a Windows OS.  Simple and easy to learn, the Q4 software allows users to quickly program their protocols, increasing day to day productivity.

For over 40 years Tomtec has assisted the scientific communities research with the incredible accuracy of our Quadra4 pipetting heads.  Our air displacement, positive displacement, and time/pressure heads will give users the most precise results for even the most complicated of laboratory protocols.  Click to view a sample of our Accuracy Reports and Performance Qualifications.