ENV-40-pH pH Probe Operating principle
A pH (potential of Hydrogen) probe measures the hydrogen ion activity in a liquid. At the tip of a pH probe is a glass membrane. This glass membrane permits hydrogen ions from the liquid being measured to defuse into the outer layer of the glass, while larger ions remain in the solution. The difference in the concentration of hydrogen ions (outside the probe vs. inside the probe) creates a VERY small current. This current is proportional to the concentration of hydrogen ions in the liquid being measured.
This pH Probe can be fully submerged in fresh water or salt water, up to the BNC connector indefinitely.
ENV-40-pH pH Probe Typical Applications
Standard lab use
Field use
Soil
Low ionic and ultra-pure water
High pH solutions (up to 14 pH)
Samples containing heavy metals
Hydroponics / aquaponics
Beer, wine and other liquor
Food safe
ENV-40-pH pH Probe Specifications
Reads | pH |
Range | 0 - 14 |
Response time | 95% in 1s |
Max pressure | 100 PSI |
Max depth | 60m (197 ft) |
Temperature range | 1 - 99 °C |
Cable length | 1 meter |
Internal temperature sensor | No |
Time before recalibration | ~1 Year |
Life expectancy | ~2.5 Years + |
Maintenance | N/A |
Weight | 49 grams |
Isopotential point | pH 7.00 (0 mV) |
Dimensions | 12mm x 150mm (0.5" x 6") |
BNC connector | Yes |
Sterilization | Chemical only |
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