TRIS BUFFERED SALINE (TBS), 20X READY-PACK™ Grade:ULTRA PURE GRADE CAS Number: N/ASynonym(s): None Molecular Weight: N/AMolecular Formula: N/A Storage Condition: Room Temperature CodeSizePriceQuantity 0788-2PK Pre-blended TBS buffer. Each Ready-Pack™ prepares 1 liter of a 20X solution of tris buffered saline when dissolved in water. A 1X solution contains 25mM Tris, 140mM Sodium Chloride, and 3.0mM Potassium Chloride.