Aqua Master Storage Solution KCI, 500 mL - Case of 8Aqua Master KCI Storage Solution. Traceable to NIST standard. Close immediately after use. Store between 59 77F (15 25C). Do not return liquid. Thoroughly rinse the electrode before and after each use. Pour some KCI storage solution into the electrode's protective cover. Place the electrode in the solution. Available in the following case sizes: 100 mL Case of 18 500 mL Case of 8