YSI 6155 Optical DO Membrane Kit
Features
- YSI recommends that membrane is replaced annually
- User-replaceable membrane with step-by-step instructions
- Includes tool for replacing membrane
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Note: All optical DO membranes are now manufactured from anti-fouling copper alloy; these membranes directly replace black plastic membranes. Anti-fouling membranes can be used on existing ROX probes with no detrimental effects on data. The copper-alloy YSI 6155 optical DO membrane may arrive with surface patina and/or discoloration. This will not affect membrane performance.
- (1) YSI 6155 optical DO membrane
- (3) Installation screws
- (1) Hex wrench
- (1) Instruction sheet with calibration coefficients
In The News
Wisconsin watershed program involves high schools to collect, share data
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 MorePME miniDOT Logger: Plunge into Data
The PME miniDOT Logger is a compact data logger that measures dissolved oxygen (DO) and temperature down to 100 meters in depth. The unit can also endure low water temperatures and is durable underneath an ice layer, which is excellent for gathering essential winter water quality data that is lacking from using less robust equipment. The high depth rating and ability to withstand frigid temperatures make the PME a reliable device that is deployable in dramatically different environments, such as a monitoring well, an inland lake or an underwater cave. 
 
The logger itself features an optical DO sensor, temperature sensor, two AA lithium batteries and a micro SD memory card.
Read MoreThe Water of Life: How Understanding Natural Hydrologic Processes in Aquatic Ecosystems Can Lead to a Sustainable Future
From watersheds that provide drinking water, the rain that nourishes plants, to the streams and rivers that help aquatic ecosystems flourish, water is an ever-present and ever-essential part of life. For those like Durelle Scott, a professor of Biological Systems Engineering at Virginia Tech University, understanding the importance of these natural systems was always a part of life. 
 
The desire to preserve the nation's aquatic resources stems from a childhood spent exploring the lakes and streams that surrounded him growing up in rural Pennsylvania. Now, as a teacher and a researcher, Scott makes it a priority to ensure that people now and in the future appreciate the enormous impact that aquatic ecosystems have on their lives. “I would say that water connects us all.
Read More