Tris-EDTA Buffer — 10× concentrate (pH 8.4). Composition: Tris-EDTA 0.45/0.07 M, NaCl 1.5 M, Sodium Azide. 1 × 20 mL concentrate. Research use.

10× concentrated buffer for chromogenic anti-Xa and anti-IIa coagulation assays requiring EDTA chelation of divalent cations. Dilute 1:10 to prepare working buffer before use in heparin assay systems.

• 10× concentrate — dilute 1:10 before use
• EDTA chelation for divalent cation-free assay conditions
• 1 × 20 mL