Portable Turbidimeter with 0-1100NTU/0-275EBC/0-9999ASBC Calibration Solutions
▲ Power Off : Manual or Automatic (15 minutes after last key pressed). ▲ Detector :Silicon : Photodiode. ▲ Light Source : Infrared-emitting diode (850 nm wavelengt). ▲ Auto-Power Off effectively conserves battery life.