APERA PC60-Z Multi-Item Water Quality Meter, Equipped with Bluetooth, Multiple Measurement of pH, Conductivity (EC), TDS, Salinity, Resistivity, Dedicated App, ZenTest Free Download

Apera Instruments, LLC-AI3719 PC60-Z Bluetooth Multi-Parameter Smart Tester Powered by ZenTest Mobile App, Measuring pH/Conductivity/TDS/Salinity/Resistivity/Temp.

Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz

Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes