BrandTech® Transferpettor® Positive Displacement Pipet Tips
The Transferpettor™ positive displacement pipettor is the best tool for use with liquids that render traditional air-displacement pipettes ineffective. Unlike air displacement pipettes, the piston of the Transferpettor directly expels the media from the tip, wiping the tip walls completely clean. This results in negligible residual wetting and highly accurate, reproducible results, especially with viscous, foaming, high-vapor-pressure, and other "problematic" liquids.
The Transferpettor is designed for use with viscous solutions up to 20,000cSt (mm2/s) and high density media (up to 13.6g/cm3) such as concentrated protein solutions, oils, fats, resins, and glycerin. Use the Transferpettor to accurately pipette surfactants such as Tween® 20, Mucasol® as well as high-vapor-pressure media (up to 500mbar), including alcohols, acetone, and hydrocarbons.