ORP Probe - ENV-40-ORP

• Reads​: ORP​
• Range​: +/-2000mV​
• Response time​: 95% in 1s​
• Max pressure​: 100 PSI​
• Max depth​: 60m (197 ft) ​
• Temperature range​: 1 - 80 °C​
• Cable length​: 1 meter​
• Weight​: 44 grams​
• Speed of response​: 95% in 1 second​

  • Model Number: ENV-40-ORP
  • Data Sheet: Date Sheet File
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  • ORP Probe
  • ORP Probe
  • ORP Probe
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Product Specification

ENV-40-ORP ORP Probe Operating principle
ORP stands for oxidation/reduction potential. Oxidation is the loss of electrons and reduction is the gain of electrons. The output of the probe is represented in millivolts and can be positive or negative.

Just like a pH probe measures hydrogen ion activity in a liquid; an ORP probe measures electron activity in a liquid. The ORP readings represents how strongly electrons are transferred to or from substances in a liquid. Keeping in mind that the readings do not indicate the amount of electrons available for transfer.

This ORP Probe can be fully submerged in fresh water or salt water, up to the BNC connector indefinitely.

ENV-40-ORP ORP Probe Typical Applications
• Standard lab use
• Field use
• Soil
• Low ionic and ultra-pure water
• Strong reducing agents
• Samples containing heavy metals
• Hydroponics / aquaponics
• Beer, wine and other liquor
• Food safe

ENV-40-ORP ORP Probe Specifications

Response time
95% in 1s
Max pressure
100 PSI
Max depth
60m (197 ft) 
Temperature range
1 - 80 °C
Cable length
1 meter
Internal temperature sensor
Time before recalibration
~1 Year
Life expectancy
2 Years +
44 grams
Speed of response
95% in 1 second
12mm x 150mm (0.5" x 6")
BNC connector
Chemical only

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