YSI Quatro Multi-Parameter Cable Assemblies
Features
- Includes 5560 temperature/conductivity sensor
- (3) additional ports available for DO and (2) ISE sensors
- 2 year warranty on cable assembly
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
The YSI Quatro is a 4-port cable and bulkhead for the ProQuatro and legacy Professional Plus handheld instruments. With this cable assembly, users can measure conductivity and temperature, dissolved oxygen, and any two ISEs among pH, ORP, ammonium, nitrate or chloride. All sensors are rugged and designed for true field work to reduce the overall cost of ownership.
- 2-year warranty on cable assembly
- 1-year warranty on probe module
- (1) Quatro cable assembly
- (1) 5560 temperature/conductivity sensor
- (1) Calibration cup
- (1) Probe guard with weight
- (1) Cable management kit (with cable assemblies longer than 1m length)
In The News
Canadian baseline monitoring shows healthy Horse Creek
Baseline monitoring conducted by the Little Creeks and Rough Fescue Appreciation Society showed that Alberta’s Horse Creek is healthy but still threatened, according to a Rocky View Weekly article. 
 The initiation of the study was one of the main goals of the nature loving group of Canadian women. It is now in its second year. 
 They collected funds to hire a consultant to monitor the creek. Parameters such as temperature, dissolved oxygen, pH, conductivity, dissolved and suspended solids were measured. The study also examined nutrient intake into the creek. 
Monitoring showed the creek was in relatively good health but is threatened by excessive water flows from nearby Cochran Lake, nutrient loading and inflow of higher conductivity water.
Read MoreFrom Pans to Buoys: Advancing Reservoir Evaporation Rate Monitoring in Texas
In warmer climates like Texas, high reservoir evaporation rates can lead to declines in water level and water availability during droughts, making monitoring essential in order to ensure water security during times of scarcity. 
 
According to the Texas Water Development Board (TWDB), evaporation rates in Texas were previously based on data collected from a sparse network of Class A evaporation stations, dating back to the 1960s. These pans were stationed near reservoirs and still remain a widely accepted standardized approach to measuring evaporation rates on land. 
 
Monthly pan-to-lake coefficients were developed in the 1980s to connect the data collected from the pans to known lake conditions, extrapolating evaporation rates of the lakes using the pan data.
Read MoreA Drop in the Ocean: Restoring London’s Tidal Thames
The United Kingdom has grappled with wastewater management problems for decades. Although sewage treatment in the 20th century allowed many rivers, including the tidal Thames, to have healthy fish populations, combined sewer overflows into rivers–most commonly during heavy rainfall–affected water quality and occasionally even killed fish. 
 
Problems reached a head in 2012 when multiple infractions of European urban wastewater treatment laws threatened costly fines, on top of the environmental cost of repeated sewage spills into British rivers. 
 
Fast forward to 2025, and after a decade of construction work, London’s Thames Tideway Tunnel , affectionately dubbed the “super sewer”, is now fully activated and ready for testing.
Read More