Bacteriophage Precipitation and Concentration: PEG 8000/NaCl-mediated precipitation of phage (e.g., M13/f1, λ, T7) from E. coli culture supernatants and lysates for downstream purification and titering.

Phage Display Workflows: Recovery and concentration of filamentous phage particles during phagemid library rescue and amplification from infected E. coli.

Size-Selective DNA Cleanup: PEG/NaCl-based precipitation of nucleic acids (PCR products, plasmid DNA, ssDNA) for cleanup and concentration.

Nucleic Acid Concentration from Dilute Samples: TE-stabilized precipitation to enrich DNA/RNA while inhibiting nuclease activity.

Removal of Enzymes and Proteins: PEG-induced precipitation to clear proteins from molecular biology reactions prior to DNA recovery.

Pre-clarification Before Ultracentrifugation: Aggregation/precipitation step to reduce sample volume and debris in phage prep workflows.

Reduced Nonspecific Adsorption: Tween-20 minimizes loss of particles and nucleic acids during handling, filtration, and storage.