Apera Instruments SX736 pH/DO/Conductivity/TDS/Salinity/Resistivity Portable Handheld Multiparameter Meter Kit

From the manufacturer DO Electrode Apera's proprietary 3-in-1 polarographic DO electrode enables automatic compensation for temperature and salinity, minimizing DO measurement error.

And the electrode polarization takes only 5 minutes vs.

industry average 30 minutes., pH Electrode The 201T-S pH/temperature electrode is featured with fast response and high accuracy.

This electrode is suitable for general water solutions' pH testing.

A storage bottle comes with the electrode to keep its sensitivity., Conductivity Electrode 2301T-5 Conductivity Electrode (K=1.0) is featured with a proprietary platinum black sensor for accurate readings in a wide conductivity range up to 200 mS/cm, along with a built-in temperature sensor for automatic temperature compensation.