Application of 8362 AZ Water Conductivity and TDS Tester Pen: ¡El 8362 AZ Electric Conductivity and TDS Meter can measure the Conductivity, TDS (Total Dissolved Solid) and Temperature for the water solution target. ¡El units of Conductivity are including uS & mS, and the units of TDS are including ppm & ppt.¡El 8362 AZ Digital EC and ppm Meter is designed as auto-ranging since powered on. Auto-ranging determines and selects a range which gives User the greatest resolution and accuracy.¡El Conductivity and TDS measuring function of 8362 AZ Conductivity and TDS Pen could proceed with the calibration easily by user. Its pen type housing design could let user take or carry easily. It could be the best Water Quality tester for all professional measuring purposes, including the LAB, water treatment business, Aquaculture, Aqua farm, swimming pool or other related industry.8362 AZ Conductivity and TDS Pen was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.