Stock solution of buffer used for assaying phosphatase protein.

• Frozen solution of buffer containing: 125 mM HEPES pH 7.2, 250 mM NaCl, 12.5 mM EDTA
• Buffer passed through a 0.2 µ filter membrane and packaged aseptically
• Store at −20 °C

For optimal storage, aliquot buffer into smaller quantities after centrifugation and store at recommended temperature. For most favorable performance, avoid repeated handling and multiple freeze/thaw cycles.