YSI 400369 TruLine Ammonia Low Standard

Includes ISE, 2 membrane modules, fill solution, ISA, and high standard.

Dual channel meter for dual measurement of pH, mV (ORP) or ISE, AutoRead function improves repeatability.

Two channel input for pH, ORP, optical-based DO/BOD, or conductivity, large, easy to read color display.

Three channel input for pH, ORP, Optical-Based DO/BOD, or conductivity, antibacterial keypad, large, easy to read color display.