7.3 REAGENTS:
7.3.1 20 mM Sodium Phosphate Buffer with 6.7 mM Sodium Chloride, pH 6.9 at 20°C (Buffer)
Prepare 100 ml in purified water using Sodium Phosphate, Monobasic, Anhydrous, Sigma-Aldrich Product Number S0751 and Sodium Chloride, Sigma Product No S9888. Adjust to pH 6.9 at 20°C with 1 M NaOH.