Western Blotting: Used as a membrane wash buffer to reduce nonspecific protein–antibody interactions during transfer and probing.

ELISA: Serves as a plate wash buffer to minimize background and improve signal-to-noise in antibody-based detection.

Immunohistochemistry/Immunocytochemistry: Employed for slide and cell washing (often after fixation/permeabilization) to reduce nonspecific binding in staining workflows.

Immunofluorescence Microscopy: Used for washing coverslips and samples to preserve antigen–antibody complexes while limiting background fluorescence.

Flow Cytometry (Fixed/Permeabilized Cells): Applied as a wash buffer during intracellular staining to decrease nonspecific antibody binding and cell clumping.

Antibody Dilution/Incubation Buffer: Provides a surfactant-containing diluent that stabilizes antibodies and reduces hydrophobic adsorption when combined with protein blockers.

Bead- and Plate-Based Immunoassays: Utilized for washing magnetic/latex beads and microplates (e.g., multiplex assays) to limit nonspecific interactions.

Immunoprecipitation/Co-IP Washes: Incorporated in wash steps to lower nonspecific protein binding while maintaining isotonic, buffered conditions.