BRAND Positive Displacement Pipettes

Positive displacement pipettes - The pipette for difficult media

The Transferpettor positive displacement pipette is ideal for liquids when air displacement pipettes just won′t work. Viscous, foaming, high vapor pressure: the Transferpettor pipette can handle them all, with the precision and accuracy you expect from a BRAND pipette.
The Transferpettor pipette is suitable for media with:
  • Density up to 13.6 g/cm3
  • Viscosity up to 140,000 mm2/s (depending on the instrument size)
  • Vapor pressure up to 500 mbar
  • Working temperature range: 15 °C to 40 °C
  • Volume range 1 μL to 10 mL

In contrast with air displacement pipettes, the piston is in direct contact with the aspirated liquid. The tightly fitting piston always wipes the walls of the tips completely clean - literally to the last drop. Therefore, results are always perfectly reproducible.

There is no need to discard tips after each pipetting operation, since residual wetting is negligible.

However, in cases where no carry-over can be tolerated, for example with infectious or radioactive media, a different BRAND Transferpette® model is recommended, such as an air displacement pipette with a disposable tip for convenient operation.

The Transferpettor pipette is ideal for pipetting highly viscous media, such as highly concentrated protein solutions, oils, resins and fats up to a viscosity of 50,000 mm2/s. Media with high density up to 13.6 g/cm3 such as glycerin, mercury, sulfuric acid, etc. can be pipetted without the need to recalibrate.

Even media with high vapor pressure (up to 500 mbar) such as alcohols, ether and hydrocarbons can be pipetted simply, reliably and with the highest accuracy.
Media which tend to foam, such as tenside solutions, pose no problem to the Transferpettor pipette.