Water Quality Meters Water Quality Meters from Extech Instruments.

	CAD $110.00 EC400: Waterproof ExStik Conductivity/TDS/Salinity Meter Model   One high accuracy multi-range sensor measures four parameters (Conductivity, TDS, Salinity and Temperature).
	CAD $168.00 EC500: Waterproof ExStik II pH/Conductivity Meter   Combination flat surface pH electrode with autoranging high accuracy Conductivity cell