Certified Reference Materials Selangor, Malaysia, Kuala Lumpur (KL), Klang

Instrument calibration is one of the primary processes used to maintain instrument accuracy. Some sample instruments/devices of GVM's calibration capabilities are indicated below:
Chlorine Meter	Water Activity Meter	Turbidity Meter	Dissolved Solid (TDS Meter, DS Meter)
Dissolved Oxygen (DO) Meter / Analyzer	Conductivity (Resistivity Meter)	Conductivity Analyzer / Meter	pH Meter / Controller with Probe