Water Pen TDS Sensor Pen Portable Water Meters Hangzhou Ruichang Import and Export Co., Ltd. Base Info Model NO.:T13Display:DigitalAppliance:Water TesterPortable:PortableType:TDS MeterTrademark:OEMTransport Package:200 PCS,CartonSpecification:15.5*3.1*2.3Origin:ChinaHS Code:9026809000 Description Pre:Test Tool TDS Digital Meter Tester Pen for Water Quality Next:TDS Meter Water Tester Pen Measurement Tool TDS Tester