YSI 6581 pH Sensor

YSI 6581 pH Sensor


The YSI 6581 is a replacement pH sensor for use with YSI 600R multi-parameter water quality sondes.


  • YSI 6581 requires service center installation - contact us to schedule your sonde for servicing
List Price
Your Price
Get Quote

In Stock
Shipping Information
Return Policy
Why Buy From Fondriest?


YSI 6581 pH sensor will provide excellent field performance in waters of varying conductivities and eliminate the need for expensive probes that are specially designed for low conductivity applications.
Image Part # Product Description Price Stock Order
YSI 6581 pH Sensor 006581 6581 pH sensor, for use with YSI 600R (requires service center installation) In Stock
Image Part # Product Description Price Stock Order
YSI pH Calibration Buffers 603824 3824 pH calibration buffer pack, 2 pints ea. of pH 4, 7, & 10
Usually ships in 3-5 days
YSI pH Calibration Buffers 003823 3823 pH 10 calibration buffer, 6 pints
In Stock
YSI pH Calibration Buffers 003822 3822 pH 7 calibration buffer, 6 pints
In Stock
YSI pH Calibration Buffers 003821 3821 pH 4 calibration buffer, 6 pints
In Stock
YSI Sonde Tune-Up Service Tune-Up Sonde Tune-up YSI 6-Series water quality sonde, includes all repair labor
Usually ships in 1-2 weeks
YSI 600R Multi-Parameter Water Quality Sonde 063625 600R Sonde with temperature/conductivity sensor Usually ships in 3-5 days

YSI 6581 pH Sensor Reviews

| Write a Review

Be the first to write a review

Related Products

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 More

NOAA 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 More

First Environmental Monitoring System For Baltimore’s Inner Harbor

Baltimore’s Inner Harbor and the rivers that flow into it are important sources of water to Chesapeake Bay, popular recreation sites and the targets of an ambitious clean-up plan. But the city has for some time lacked an environmental monitoring system for tracking water quality in the harbor continuously. That is about to change, thanks to a collaboration between the U.S. Geological Survey (USGS) and Environmental Protection Agency (EPA). It will lead to the new installation of a suite of sensors that will provide the public and scientists with the first comprehensive, real time look at water quality in the harbor.

Read More