Cell Washing and Resuspension: Rinses adherent and suspension cells at pH 7.4 to remove serum, enzymes, and media components.

Sample Dilution and Reagent Preparation: Provides a buffered saline matrix for diluting antibodies, proteins, and small molecules.

ELISA and Immunoassays: Used as a wash buffer and antibody diluent to reduce nonspecific binding and maintain stable pH.

Flow Cytometry: Serves as a staining and wash buffer to maintain cell integrity during labeling and analysis.

Immunofluorescence/IHC: Employed for washing and antibody dilution in tissue and cell staining workflows.

Western Blotting: Used for membrane washing and antibody dilution during blot detection steps.

Microbiology: Applied as a diluent and rinse for serial dilutions, plating, and pellet resuspension of Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa.

Tissue Handling and Transport: Maintains physiological pH during tissue rinsing and short-term transport.

Protein Workflows: Buffer for sample handling, dialysis exchanges, and column equilibration when phosphate compatibility is required.

Nucleic Acid Handling: Used for rinsing and dilution of DNA/RNA and cells when phosphate is compatible with downstream enzymes.