YSI EXO2 Flow Cell O-Ring

EXO2 flow cell O-ring
$3.82
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YSI EXO2 Flow Cell O-Ring
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EXO2 flow cell O-ring
$3.82
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In The News

Rounded pebbles give evidence of past flowing water on Mars

NASA's Curiosity rover has found pebbles that appear to have been rounded by streamflow, according to a release from University of California Davis. Experts say the finding represents the first on-site evidence of sustained flowing water on Mars. The rounded pebbles discovered are only known to form when transported through water over long distances. Their discovery supports theories that the red planet could once have supported life. The smooth rocks were found between the north rim of the planet’s Gale Crater and the base of Mount Sharp, a mountain inside the crater. Researchers say they chose Gale Crater for study because there was a sediment deposit there that typically requires water to form.

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U. Delaware studying tidal flow, sediment movement in salt marshes

University of Delaware scientists are studying the impacts that rising sea levels might have on marsh ecosystems in the future, the University of Delaware has reported. Scientists predict that rising sea levels could convert marshes into intertidal flats. These conversions could drastically change land composition by stripping sediment from the land, which could alter water quality by exposing substantial quantities of sequestered carbon and pollutants. Researchers are monitoring the fluctuations of water flow and sediment concentrations in Delaware’s Brockonbridge Marsh.

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Total algae sensor is the newest addition to YSI's EXO sondes

Many algae sensors can detect Chlorophyll a or levels of blue-green algae. YSI’s new Total Algae Sensor can measure both at the same time. “If you’re only looking at Chlorophyll a, you can miss a very big portion of total algae biomass,” said Tim Finegan, product manager. The new sensor is an optional attachment to the company’s line of EXO sondes, which debuted earlier this year. It’s an optical probe and maintenance is limited to keeping the sapphire windows on the unit clean. The Total Algae Sensor can be calibrated in two different ways, one for spot sampling and one for continuous sampling, which allows users to make sure readings are accurate for their specific monitoring applications.

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