Extech Oyster pH Meter
Features
- Memory function stores and recalls 25 labeled readings
- °C/°F switchable
- Audible beeper to alert user when function is completed
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Extech Oyster Series pH/mV/Temperature Meter features a large LCD built into the adjustable flip-up cover that displays pH or mV and temperature simultaneously. The microprocessor-based meter has a splash-proof housing and front panel tactile touchpad to slope and calibrate.
Mechanics
The meter measures pH from 0 to 14pH, mV from -999mV to 999mV, and temperature from 32.0°F to 212.0°F (0.0°C to 100.0°C). The memory function stores and recalls up to 25 labeled readings. Self-diagnostics display codes help users troubleshoot electrodes, buffer, and temperature errors. The measurements are automatically or manually temperature compensated, and the meter is calibrated at a 5-point buffer recognition (1.68, 4.00, 7.00, 10.00, 12.45) with adjustable values. An audible beeper will sound when a function is completed.
- pH range: 0.00 to 14.00pH
- pH resolution: 0.01pH
- pH accuracy: 0.02pH
- mV range: 999mV to 999mV
- mV resolution: 1mV
- mV accuracy: 2mV
- Temperature range: 32.0°F to 212.0°F (0.0°C to 100.0°C)
- Temperature resolution: 0.1°
- Temperature accuracy: 0.8°F/0.5°C
- Dimensions: 3.7 x 4.2 x 2" (94 x 107 x 51mm)
- Weight: 12oz (340g)
- (1) Meter
- (1) Neckstrap
- (1) 9V battery
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 MoreCal Poly, San Luis Obispo Manages Monitoring Efforts in Morro Bay
California Polytechnic State University, San Luis Obispo (Cal Poly, SLO), has been monitoring Morro Bay for decades, and while the monitoring program has changed over the years, the dedication to monitoring the bay has remained the same. 
 
The project started in 2006 as a Packard Foundation-funded initiative to monitor water quality flowing in and out of Morro Bay. The goal at the time was to use the data collected to develop and inform an ecosystem-based management plan in collaboration with the Morro Bay National Estuary Program (MBNEP). 
 
Since the estuary was the focus at the time, researchers were monitoring water flowing into the estuary from Chorro Creek and Los Osos Creek.
Read More