Bacteriophage Precipitation and Concentration: PEG/NaCl-mediated precipitation of M13, f1, T7, λ, and P1 phage from Escherichia coli cultures and lysates for downstream amplification or storage.

Phage Display Workflows: Concentration and cleanup of filamentous phage after helper phage rescue and prior to panning or titering.

Viral Particle Concentration from Cell Culture: Precipitation of enveloped and non-enveloped viruses from supernatants to increase titer for transduction or assay.

Environmental Virome Enrichment: Concentration of bacteriophages from water, wastewater, or soil extracts for metagenomics and plaque assays using hosts such as Escherichia coli and Pseudomonas spp.

Phage-Mediated Transduction Workflows: Preparation and concentration of transducing lysates (e.g., P1) for genetic exchange in Escherichia coli.

Macromolecule Precipitation: PEG-assisted precipitation of nucleic acids and protein complexes from dilute solutions for downstream purification.

Phage DNA Preparation: Concentration of phage particles prior to ssDNA extraction for cloning or sequencing.