This sturdy base measures 23 x 16 cm (9 x 6”), weighs 1.5 kg (3.3 lb), and is ideal for use with pH meter probes.  

The included flexible arm has over twenty individual links with ball-and-socket joints for maximum range of motion.

Centered along each edge of the base are octagonal-shaped wells (4 total) with a maximum diameter of 1.5 cm (0.6”) for affixing the flexible arm, or additional support rods or holders (two thumb screws are provided)

Electrode Holder (F18317-1000) sold separately.