Apera Instruments AI103G GroStar Series GS3 EC/500ppm/700ppm Pen Tester Kit with Replaceable Titanium EC Probe for Hydroponics Water Quality Testing, Gen II

"Apera Instruments GroStar GS3 EC/ppm Pen Tester (Gen2) is a lab-grade meter designed specifically for growers to easily manage crop success, featuring a replaceable conductivity sensor and a grower-friendly workflow along with other intelligent functions and features that help reduce the guesswork and give you confidence in every measurement.

EC/500ppm/700ppm/Temp.

All in One Simply measures EC, 700ppm, 500ppm, and temperature simultaneously with a single tap of the Mode button.

Advanced EC Sensor Tech The premium EC probe is featured with titanium alloy conductivity sensor and a built-internal thermistor for automatic temperature compensation , ensuring accurate EC/ppm measurements in the long run.The probe is replaceable just so you only need to replace the probe when it reaches its end of life instead of buying a whole new tester."