Bacteriophage Precipitation and Concentration: PEG/NaCl mixture used to precipitate and concentrate phages from lysates and culture supernatants for downstream titration or DNA prep.

Viral Particle Concentration: Employed to enrich enveloped and non-enveloped viral vectors from cell culture supernatants prior to purification or infectivity assays.

Phage Display Workflows: Utilized to recover and concentrate phagemid particles after amplification, facilitating biopanning and sequencing steps.

Nucleic Acid Precipitation: Applied to selectively precipitate high–molecular-weight DNA/RNA and phage DNA, improving yield before cloning or library construction.

Protein Crystallization Screens: Serves as a precipitant/crowding solution (PEG 8000 with high ionic strength) in initial and optimization screens for macromolecular crystallography.

Macromolecular Crowding in Biochemistry: Provides defined osmotic and ionic conditions to promote complex formation, phase separation, or aggregation studies in vitro.