The Reluctant Spy

BHYIQI Online Industrial PH Meter Online PH Analyzer with pH Range -1.00 to 15.00pH mV Range -1000 to 1000mV Communication Interface RS485 Temperature Compensation 1 to 3 Points Calibration

BHYIQI Industrial pH Analyzer Online pH Controller with 1 to 3 Points Calibration pH Range -1.00 to 15.00pH Automatic Temperature Compensation High/Low Limit Alarm Detachable Screw Terminals

M500T Touchscreen Benchtop Multi Parameter Meter pH/EC/ISE/DO/Temp ±0.002 pH Accuracy 1–6 Point Calibration 7″ LCD GLP 1000 Data Sets USB RS-232 Industrial & Lab Analyzer

Sper Scientific Benchtop Water Quality Meter 860033 - pH, ORP, Conductivity, TDS, Salinity & Temperature Analyzer w/Automatic Calibration & EPA Equivalency for Labs & Industrial Use - 2 pc

BHYIQI Industrial Online PH Controller mV Meter with PH Range -1.00 to 15.00 1 to 3 Points Calibration for Monitoring PH in The Chemical, Environmental Protection and Industrial Fields

Sper Scientific Pure Water Meter 850038 – Measures Conductivity Salinity TDS Temperature with 99 Data Points Logging & Large LCD Display - for Labs, Boilers, Aquariums & Industrial Use - 2 pc

Sper Scientific Benchtop Water Quality Meter 860033 - pH, ORP, Conductivity, TDS, Salinity & Temperature Analyzer w/Automatic Calibration & EPA Equivalency for Labs & Industrial Use - 4 pc

Sper Scientific Pure Water Meter 850038 – Measures Conductivity Salinity TDS Temperature with 99 Data Points Logging & Large LCD Display - for Labs, Boilers, Aquariums & Industrial Use - 4 pc