Western Blotting: Antibody dilution and membrane washing; add Tween-20 (TBST) to reduce nonspecific binding.

ELISA: Plate washing and antibody/sample dilution to maintain isotonicity and stable pH.

Immunohistochemistry/Immunocytochemistry: Tissue/cell washing and blocking buffer base to minimize background.

Immunofluorescence Microscopy: Wash buffer for slides and coverslips to preserve antigen–antibody interactions.

Immunoprecipitation/Co-IP: Wash buffer to reduce nonspecific protein interactions during capture.

Protein Biochemistry: Sample dilution, reagent preparation, and column equilibration/wash when phosphate is undesirable.

Cell and Tissue Handling: Isotonic rinse for cells and tissues prior to fixation or lysis.

General Laboratory Buffer: Stable pH and ionic strength (50 mM Tris-HCl, 150 mM NaCl) for compatible enzyme assays and reagent formulation.