Sodium Citrate Buffer (0.5M, pH 5.5)

Sodium Citrate Buffer (0.5M, pH 5.5) is a sodium citrate buffer with pH of 5.5. It is a commonly used acidic biochemical buffer suitable for heat-induced epitope retrieval (HIER) to reduce antigen masking caused by protein cross-linking in formalin-fixed, paraffin-embedded (FFPE) tissues. Sodium Citrate Buffer (0.5M, pH 5.5) also maintains stable pH within its effective buffering range, making it suitable for stabilizing certain proteins and enzymes.