TDS Meter 0-9990ppm Digital Water Quality Detection Pen Water Quality Tester for Drinking Monitoring System for Aquarium Pools

Battery Included : Yes High-concerned chemical : None Origin : Mainland China place of origin : China type : Portable water quality analyzer power supply voltage : 3V applicable industry : Hospitals, swimming pools, CDC Measuring range : 0-9990ppm Water quality test pen : TDS pen test pen