Water proof and one of the easiest to use multi-parameter water quality handheld on the market!
EPA approved for drinking water and wastewater compliance reporting!
Notice: YSI® 556 Series Handhelds
YSI® Discontinued the 556 Series Handhelds
Effective February 2016
All YSI® 556 Series Cables Includes:
Dissolved Oxygen (DO) and Temperature/Conductivity Sensor Probes, DO Membrane Kit (blue caps), Maintenance Kit, Metal Ventilated Probe Guard, and Clear PVC Calibration Cup
4 Meter Cable
10 Meter Cable
20 Meter Cable
All 556 sensors and probes are field-friendly and do NOT require tools!
Cond/ Temp Sensor
pH/ ORP Sensor
DO Replacement Probe
Amplified pH/ ORP Combo Sensor Kit
Amplified pH Sensor Kit
Amplified pH/ ORP Combo Sensor
Amplified pH Sensor
Amplified Sensors are ideal for high static applications, very cold waters, and long term field studies where sensor probe connectors may be subject to moisture.