Hach Dissolved Oxygen Reagent Set
- Winkler (Azide Modification) method
- 1 to greater than 10 mg/L
- Powder pillows, indicator solution, and titration cartridge
|2272200||Dissolved oxygen reagent set, modified Winkler method, 1 - greater than 10 mg/L, 50 tests|
|Usually ships in 3-5 days|
|Usually ships in 3-5 days|
free iodine as triiodide in proportion to the oxygen concentration. The iodine is titrated with sodium thiosulfate to a colorless end point.
- Range: 1 - greater than 10 mg/L as DO
- (50) Alkaline iodide-azide powder pillows
- (50) Manganous sulfate powder pillows
- (50) Sulfamic acid powder pillows
- (1) Sodium thiosulfate titration cartridge, 0.2000 N
- (1) 100 mL starch indicator solution
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“Our organization has worked extensively on tap water over the years, and an updated version of our tap water database was just released in 2017,” explains Dr. Stoiber. “We've been thinking about new ways to analyze that data.”
Right now, the risk from contaminants in water quality is assessed one at a time—but that really doesn't comport with reality.Read More
Washington Department of Fish and Wildlife (WDFW ) scientists are using a customized underwater robotic vehicle (remotely operated vehicle or ROV) called the Saab Seaeye Falcon on a critical conservation study of threatened and imperiled rockfish. Dr. Dayv Lowry , a Senior Marine Fish Research Scientist, spoke to EM about using the ROV to facilitate rockfish conservation and recovery in the Puget Sound.
“In the Pacific Northwest, the Washington and Oregon coast, several species of Rockfish have been fished for decades, with up- and downswings in abundance,” explains Dr. Lowry. “When fishing pressure decreases, and the stocks start to recover, we have gone back to fishing—the pendulum has swung over the years.Read More
Since the summer of 2018, Wilson Lake in Maine hosted a data buoy that contains a set of long-term environmental data loggers. The rugged buoy was specially designed for year-round use, monitoring dissolved oxygen and temperature even when it's locked in ice.
University of Maine, Farmington biology professor Dr. Rachel Hovel spoke to EM about the Wilson Lake buoy and her team's work with its data.
“The ability to generate a long-term data set and collect these data over the entire year is really useful, both in the classroom and for asking questions about what's happening in this lake,” comments Dr. Hovel.
Although the Wilson Lake buoy has been deployed for just over a year, these kinds of deployments have the potential to be very long-standing. Dr.Read More