Ohaus pH Pen Meter ST20

'Pen’ type handheld pH meters from Ohaus, which provide a compact, fast, simple to use, accurate means of measuring pH. These durable meters feature a waterproof plastic housing, constructed to ingress protection IP67, auto-shutoff (after 6 minutes) to prolong battery life, and a protective cap to safeguard the sensor. Two models are available, providing resolutions of 0.1^oC or 0.01^oC. Require 4 x LR44 button cell batteries. Replacement electrodes are available for both models.

· Single handed use

· pH range:      0.00 to 14.00 pH

· Resolution:    0.01 pH

· Accuracy:      0.05 pH

· Calibration:   3-point - buffer groups 4.01, 7.00 & 10.01

· Temperature compensation: Yes

· Display:       Dual LCD

· Dimensions: 185 x 45 x 38 mm