The YSI 6579 hemispherical glass probe is designed for use with the 6600 V2-4 sonde and 6445 wiper kits.
The YSI 6579 Hemisphere pH Sensor is a longer-length probe with hemispherical glass bulb. This extended length allows it to be wiped by 6600V2-4 sonde brush, and it's hemispherical shape protects most of the bulb. It is unguarded, and therefore may occasionally produce jumpy readings.
The YSI 6579 is available for use on the 6600 V2-4 with wiper/brush only.
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With oceans becoming more acidic worldwide, scientists are getting creative in designing experiments to study them. For example, one group at the University of Washington is using giant plastic bags to study ocean acidification.
Each bag holds about 3,000 liters of seawater and sits in a cylinder-like cage for stability. The group at UW, made up of professors and students, is controlling carbon dioxide levels in the bags over a nearly three-week period, during which they are looking at the effects of increased acidity on organisms living near the San Juan Islands.
“These mesocosms are a way to do a traditional experiment you might do in a lab or classroom,” said Jim Murray, professor of oceanography at the University of Washington.Read More
National Oceanic and Atmospheric Administration scientists detected signs of ocean acidification in the waters that hold the vulnerable and valuable fisheries of the North Pacific off the coast of Alaska, but they only had a snapshot of the action.
“We know that in this place were important commercial and subsistence fisheries that could be at risk from ocean acidification,” said Jeremy Mathis, a NOAA Pacific Marine Environmental Laboratory researcher and professor at the University of Alaska Fairbanks.
To understand how ocean acidification affects the North Pacific, NOAA scientists created a mooring network that collects constant in situ data on parameters contributing to acidification. They hope it will reveal seasonal trends and patterns left out by their snapshots.Read More
Sometimes scientists have to make an extraordinary effort to study the questions that concern them. In fact, they may even need to design and build labs to their specifications. This was the case with the University of Nebraska, Lincoln's (UNL’s) Fish Conservation Behavior and Physiology Lab , which serves as a locus for research on water management best practices based on fish physiology—work conducted by up and coming scientists as well as more established researchers. Dr. Jamilynn Poletto spoke to EM about how the lab was built and the work that is happening there.
Building a customized solution
“My problem was that in the lab we get city water from Lincoln, and any water from any city in the country has chlorine and chloramine in it,” explains Dr.Read More