The YSI TruLine combination ammonium electrode features BNC connection and can be used with the YSI TruLab 1320. It can also be used with the YSI MultiLab 4010-2 or 4010-3 if a BNC adapter is installed. The TruLine series of laboratory ISEs consists of 15 electrodes that have an integrated reference, eliminating the need to have a separate reference half-cell. Each TruLine ISE has a refillable double-junction reference, resulting in a long electrode life and exceptional measurement reliability. TruLine ISEs can be connected to any ISE instrument featuring BNC connection, including the YSI 1320. Reference/electrode fill solution, ionic strength adjustor, and a small bottle of standard are included with each ISE.