Swivel Base Electrode Arm, Orion

Allows electrodes to be moved from beaker to beaker with smooth, single-handed action. Quick, easy positioning with counter-balanced springs. Heavy swivel base can be located for convenience anywhere on the lab bench next to pH or specific ion meter. Arm is free-standing, allowing use with any meter. Holds up to five electrodes — four 12 mm dia. and one 16 mm dia.