pH Measurement in WaterGame-Changing Advancements in pH Measurement

pH and Water Quality

pH is one of the most common water quality tests performed, and is a critical factor in determining the health of a body of water. Excessively high or low pH values directly impact the organisms within that body of water, and many can die with even the slightest change in pH. According to the Water Research Center, the most common environmental influences on pH are bedrock and soil composition, plant and organic material within the body of water, acid rain, mine drainage, and chemical dumping either by individuals, industries, or communities.

New Advancements in pH Sensing Technology

Historically, pH sensor technology is considered the weakest link in continuous monitoring networks due to its tendency to drift, and the resulting requirement for frequent calibration (i.e. every 1-2 weeks) to ensure quality data. Over the past 30 years, improvements to pH sensor technology have failed to solve the costliest sensor shortcoming for long-term, autonomous deployments – until now.

The redesigned Aqua TROLL 600 pH sensor is the first sensor on the market to directly address and solve the costliest sensor shortcoming for continuous monitoring. It delivers hands-free, drift-free calibrations that last months as opposed to weeks, therefore reducing network program costs by more than half.

Proof is in The Data

Gone are the days of weekly or even monthly calibrations…


Long Term Stability:

Aqua TROLL 600 pH change is 0.0008 pH/day, or a change of 0.1 pH in 125 days!

pH by Type of Water/Application:

Type of Water △ >0.1 pH
DI Water > 8 days
Drinking Water (~150 µS/cm) > 30 days
Natural Waters (~1,000 µS/cm) > 60 days
Natural Waters (~7,000 µS/cm) > 90 days
Brackish (~17,000 µS/cm) > 90 days
Seawater (~35,000 µS/cm) > 90 days
Super Saline (~80,000 µS/cm) > 90 days
  • 90% Reduction in Calibration Solution
  • 3 Months Calibration Frequency
  • Antifouling Control with wiped pH/ORP