Laboratory Equipment & Services Information System by Centralized Laboratory Management Office (CeLMO)

The YSI 556 is a popular multiparameter water quality meter produced by YSI Incorporated, a leading manufacturer of environmental monitoring instruments. The YSI 556 is widely used for water quality assessment in various environmental monitoring applications, including surface water, groundwater, wastewater, aquaculture, and research

The YSI 556 Probe module is used for measuring dissolved oxygen, temperature, conductivity, and optional pH and ORP. The probe module is rugged, with the sensors enclosed in a heavy duty probe sensor guard with attached sinking weight. A 4, 10 or 20 meter cable is directly connected to the probe module body making it waterproof. An MS-19 connector at the end of the cable makes the YSI 5563 fully compatible with the YSI 556 Multi-Probe System.

The YSI 556 is used to assess the quality of surface water bodies such as rivers, lakes, and streams. It helps researchers and environmental scientists measure parameters like dissolved oxygen, pH, temperature, and conductivity to understand the health of aquatic ecosystems and identify potential sources of pollution.