OakTon Ecotestr™ pH1 Digital Waterproof Meter Tester WD-35634-05, 0 To 14.0pH
New never used.
Extech ExStik PH100 Waterproof pH Meter NEW open Box
Flat Surface Electrode for Less Risk of Breakage of Glass Bulb.
New never used.
Flat Surface Electrode for Less Risk of Breakage of Glass Bulb.