Handheld Meter Kit
Auto-ranging for maximum resolution
SALTTEST11 Salinity tester waterproof
ECTestr 11 dual-range
conductivity solution
ph-метр tester-1
PH/MV/ISE/T Waterproof pH 450 Portable Meter
Measuring device
InnoCal NIST-Traceable Calibration, for a pH Meter
Replacement Conductivity Cell
conductivity probe
multirange cup-style portable pocket conductivity meter