YSI EcoSense pH10A pH Pen Banner

YSI EcoSense pH10A pH Pen

YSI EcoSense pH10A pH Pen


The YSI EcoSense pH10A pH & Temperature Pen provides quick and accurate pH measurements in a very economical platform.


  • IP-67 Waterproof housing
  • Replaceable single- or double-junction electrodes
  • Automatic calibration and buffer recognition
More Views
List Price
Your Price
Usually ships in 3-5 days

Shipping Information
Return Policy
Why Buy From Fondriest?


YSI's EcoSense pH10A pH & temperature pen is the perfect instrument for economical spot sampling of pH and temperature in applications such as wastewater, surface water, aquaculture, hydroponics, pools, and education. The pH10A pen features an easy-to-use graphic interface, simple one-hand operation, memory, and low cost of ownership over the life of the product.


  • Waterproof IP-67
  • 1-year warranty
  • Automatic calibration and buffer recognition
  • 50-set memory (pH, temp, date and time stamp)
  • Replaceable single- or double-junction electrode
  • GLP functionality
  • 1-, 2-, or 3-point calibration
  • Hold feature locks stable readings on the display
  • CE compliance
  • >200 hour battery life with low battery indicator
Notable Specifications:
  • Operating Range: 0.0 to 50.0 C (32.0 to 122.0 F)
  • Water Resistance: IP-67 waterproof case
  • Weight with Batteries: 105 grams (3.7 ounces)
  • ATC Probe: Thermistor
  • Battery: Four LR44 alkalines included with purchase
  • Battery Life: Approximately 35 hours
  • pH Temp Compensation: Auto 0.0 to 99.9 C
  • pH Buffer Recognition: USA (4.01, 7.00, & 10.01) or NIST (4.01, 6.86, & 9.18)
  • pH Calibration Temp: 0.0 to 60 C (0.0 to 140.0 F)
  • pH Offset Recognition: +90 mV at pH 7.00 or +98.3 mV / -81.7 mV at pH 6.86
  • pH Slope Recognition: +30% at pH 4.00, 4.01, 9.18, or 10.01
  • Memory: Non-volatile; stores 50 sets (pH, temperature, date and time stamp)
What's Included:
  • (1) YSI EcoSense pH10A pH & Temperature Pen
  • (4) A76 batteries
  • (1) Operations manual
Image Part # Product Description Price Stock Order
YSI EcoSense pH10A pH Pen pH10 EcoSense pH10A waterproof pH & temperature pen
Usually ships in 3-5 days
Image Part # Product Description Price Stock Order
Fondriest Environmental pH Buffer Pack FNBUFPAK pH Buffer Pack, one 500mL bottle ea. of pH 4, 7, 10 & electrode storage solution
In Stock
YSI 580 Soft-Sided Carrying Case 605129 580 soft-sided carrying case, pH10A, ORP15A & EC30A
Usually ships in 3-5 days
YSI pH10A Replacement Sensor Cap 606116 Replacement sensor cap, pH10A
Usually ships in 3-5 days
YSI pH10A Replacement pH Electrode 606110 Replacement pH electrode, pH10A
In Stock
YSI Replacement Battery Pack Kit 605118 Replacement battery pack kit, pH10A & ORP15A
Usually ships in 3-5 days

YSI EcoSense pH10A pH Pen Reviews

| Write a Review

Be the first to write a review

Questions & Answers

| Ask a Question
What happens if I reach 50 recorded data sets?
If the memory on the EcoSense pH pen is full, the newest data set stored will overwrite the oldest saved data set.
How do I download the data?
Data from the YSI EcoSense pen cannot be directly downloaded. The 50 data set memory allows data storage within the device itself, and previous sets can be viewed with the "SCROLL" key. Exporting the data would need to be done manually.
Will the pen timestamp my data?
Yes, the EcoSense pH pen date and time stamps all data.

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

Pulse Flow Brings Colorado River Delta Big Benefits

A few years ago, a pulse flow was released into the Colorado River Delta per Minute 319 of the U.S.-Mexico Water Treaty of 1944. The flow began March 23, 2014 and ended on May 18, 2014, pushing around 130 million cubic meters of water downstream. A few months after that, this magazine checked in with some of the scientists involved in monitoring the effects of the pulse flow. Investigators told us they had deployed more than 100 piezometers to study groundwater levels. Flow trackers were giving them discharge data and measurements on salinity were being gathered with conductivity probes. For gauging the impacts to waterfowl, the researchers were using stereos to send out mating calls while listening for responses. But there was so much more data collection underway than we knew.

Read More