APERA's unique Replaceable Platinum Black sensor ensures high accuracy and consistency in a wide-range conductivity measurement | EASY Auto. Calibration with auto buffer recognition; Auto Temp. Compensation (ATC) ensures accuracy in variant temperatures (0-50. 0?C) | LARGE LCD with 3 backlit color (indicating 3 different modes), DUAL Display of temp. /EC, and indications of completed calibrations and stable readings | One-tap switch from conductivity to TDS/Salinity with customizable TDS factor (0. 40-1. 00) | Complete kit with READY-TO-USE calibration solutions, calibration vials, AAA batteries, and a lanyard all in a portable carrying case

The top-rated pH tester now comes with a complete CALIBRATION and PROBE CARE Combo Kit, ensuring reliable test performance | Comes with a probe cleaning brush for easy removal of contaminants on probes, maximizing probe's life-span | Comes with Apera's unique CalBox, heping you organize all the solutions and save cost on buffers by at least 50% | Apera quality pH sensor with low impedance, greatly improving response speed and shorteninb stablizing process | Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122˚F)