Polyethyleneimine, linear, M.W. 25,000 is used to improve the appearance of negatively charged dyes by modulating their properties and also improving their adherence to surfaces. It binds to DNA and other negatively charges biological molecules, thereby making it for efficient vector carriers in research.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.