Hydrosphere Impex India pvt Ltd is India branch office of HM DIGITAL GLOBAL; established in 1987,[ formerly known as Heemang Electronics manufacturer (OEM)that has been recognized worldwide for providing the best valu in water testing, Food testing &Hospitality Instrumentation.We strive to always provide the best values as well as the utmost care in promptly serving our distributiors and consumers.HM Digital offers the following products:EC/TDS/TEMPPHMeters/Controllers;Digital Meter-Voice Timer and Led Timer;Salt Check Meter Safe Thermometer and Callmouse.