Polyethylene Glycol (PEG) 4000 (ATCC® 52-X™)

Product Format freeze-dried 5 x 2 gram vials
Storage Conditions At the ATCC, PEG-4000 is stored at 2°C to 8°C, but the reagent may be stored at room temperature.
Applications
PEG-4000 is used to assist in the fusion of myeloma and spleen cells to form hybridomas.
Biosafety Level 1
Quality Control Specifications

Each lot is tested for bacterial and fungal contamination. Cytotoxicity testing is performed on NS-1 cells at a 40% w/v concentration. Cells must remain greater than 80% viable after exposure to PEG.