Polyethylene glycol is used to modify therapeutic proteins and peptides thereby by increasing solubility and lower toxicity. It is involved in the fabrication of bioactive and immunoisolating barriers for encapsulation of cells. It is ideally suitable for biological applications since it does not trigger an immune response. Crystallization grade PEG is utilized for formulating screens and optimization.

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.