Extech ExStik Replacement Flat Surface pH Electrode
Features
- pH electrode has built-in temperature sensor
- Flat surface electrode allows “On-the-Spot” measurements
- Complete with protective connector cap
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Extech ExStick Replacement Flat Surface pH Electrode allows on-the-spot measurements in liquids, semi-solids and solids. The pH electrode has a built-in temperature sensor. The flat surface design provides a rigid structure that is difficult to damage but easy to clean.
- (1) Replacement electrode
In The News
Ocean acidification: University of Washington's giant plastic bags help control research conditions
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 MoreNOAA Alaska buoy network to monitor North Pacific ocean acidification
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 MoreBringing Fish Back: Reviving Britain’s Freshwater Habitats with the Wild Trout Trust
Freshwater covers less than 1% of the Earth’s surface but has an outsized impact on global ecosystems, supporting more than 10% of all known species, reports the World Wildlife Fund . Freshwater environments such as rivers and wetlands provide significant scientific, economic, and cultural value. But pressure from climate change, biodiversity loss, and a lack of prioritization in environmental policies mean freshwater habitats are recognized as one of the most threatened in the world–something scientists have dubbed an “invisible tragedy. ” 
 
[caption id="attachment_39210" align="alignnone" width="940"] Remedial works underway to shore up the banks of the River Ecclesbourne.
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