YSI 559 Dissolved Oxygen Sensor
- Replacement polarographic dissolved oxygen sensor for the YSI 556 and 550A handheld meters
- Sensor easily inserts into the 5563 probe module and cable assembly for use in the YSI 556 system
- Compatible with YSI 5906, 5908, or 5909 screw-on cap membranes
|655900||559 dissolved oxygen sensor, 550A & 556|
|059880||5906 Teflon black 1.0 mil cap membrane kit, 85, 5905, 5010, 5239, 559 & 2003 polarographic sensors|
|605306||5908 PE yellow 1.25 mil cap membrane kit, 550A, DO200, 559 & 2003 polarographic sensors|
|605307||5909 PE blue 2.0 mil cap membrane kit, 559 & 2003 polarographic sensors|
- 1-year warranty
- (1) YSI 559 DO module
- (1) Instruction sheet
- (1) Hex wrench
- (1) Set screw
The 559 is compatible with 5906, 5908, and 5909 screw on cap membranes.
In The News
A group of high schoolers in the Green Bay, Wisc. area are learning about careers in environmental science thanks to the Lower Fox River Watershed Monitoring Program . The program, supported by the University of Wisconsin, has involved more than 700 students since its 2003 launch.
“We have almost ten years of data,” said Annette Pelegrin, program coordinator. “It began in 2003 with five watersheds. We’ve trained teachers and schools that are interested and showed them how to measure different parameters.”
Those include flow, temperature, transparency and turbidity of the program’s streams. YSI 55 meters are used to measure dissolved oxygen and levels of phosphorus, ammonia and nitrogen are checked with a Hach colorimeter.Read More
A few years after Ohio became a state in 1803, George Harner arrived in Greene County with a land deed signed by then-President Thomas Jefferson and Secretary of State James Madison. The homestead was largely old forest and wetlands and also included a fen-fed stream—the Beaver Creek.
As was the case with much of the Ohio Territory, the forests eventually gave way to land clearing and grain farming. Harner’s descendants, including his son John and John’s wife, Sarah Koogler, continued to work the rich soil for many years to follow.
Much of the original property and surrounding land has fallen prey to urban sprawl.Read More
Each fall in Puget Sound, coho salmon leave the salt water and swim up freshwater streams. They head upstream to spawn: lay their eggs and die.
Death is always the end of this journey for coho salmon, but in streams now running through urban areas, stormwater runoff kills them before they can spawn.
This phenomenon, called Urban Runoff Mortality Syndrome, can kill up to 70-90% of coho salmon in an affected area.
“‘Woah’ is a pretty common response,” said Kathy Peter, a research scientist formerly at University of Washington Tacoma and the Center for Urban Waters.
This phenomenon adds pressure to the Puget Sound population, already considered a species of concern by the United States Fish and Wildlife Service under the Endangered Species Act.Read More