Gelatin (1%) Blocking Buffer in TBS with Sodium Azide

1% Gelatin with 0.02% Sodium azide in TBS (50 mM Tris-HCl and 150 mM NaCl, pH 7.4 ± 0.2). Prepared in DI water. Shipped cold on blue ice, store at 2-8 C for short term and -20 C for long term.