PH100 ExStik pH Meter Great as a soil pH meter. Flat surface for easy pH readings in solid or semi-solids. Smart chip tells you when to replace electrode or recalibrate meter. Record/recall up to 15 readings. $89.99
PH110 Refillable ExStik pH Meter Same features as PH100. Refillable flat surface pH electrode. Obtain continuous high accuracy using fresh reference solution. $109.99
