Lab Grade pH Probe

(3 customer reviews)

$ 79.70

This Atlas Scientific Lab Grade pH probe is their highest accuracy pH probe. The internal double junction lets you read the pH of protein rich solutions without damaging the probe. The green EXR glass tip makes pH sensing in highly pure water easy. The body is made of extruded epoxy giving it incredible resistance to strong acids and bases. This probe can read the pH of fuming nitric acid without a problem.

24 in stock

SKU: AS.ENV-40-PH Categories: ,


Double junction  silver / silver chloride
Reads: pH
Range: 0 − 14
Resolution: +/- 0.001
Accuracy: +/- 0.002
Response time: 95% in 1s
Temperature range: °C -5 − 99 °C
Max pressure: 100 PSI
Max depth: 60m (197 ft)
Connector: Male SMA / Male BNC
Cable length: 1 meter
Internal temperature sensor: No
Time before recalibration: ~1 Year
Life expectancy: ~2.5 Years +
Included with pH probe:  1x SMA to BNC adapter

Additional information

Weight 0.1 kg
Dimensions 19.5 × 6 × 6 cm

Atlas Scientific

3 reviews for Lab Grade pH Probe

  1. dwi

    Hi, i want to monitor my catfish pond. So I wonder if the sensor can stay in water for some month/ long term immersion.

    • Patrick


      Yes, the sensors can be submerged up to the BNC connector and will work well for weeks/months without servicing. You’ll want to re-calibrate every few months. Also, make sure your probe does not get any direct sunlight as algae growth on the electrode can influence measurements negatively.


  2. Veerapong

    Can this sensor be used on arduino boards?

    • Hans Muster

      The sensor can’t be used on an Arduino directly. The Arduino ADC is not capable of it. You attach the probe to an EZO circuit which outputs the data in UART (serial or I2C). Most convenient is to use our Tentacle Shield with an EZO pH plugged into it.

  3. patran (verified owner)

    Works flawlessly, it’s used 24/7 in a hydroponics setup without problems.

Add a review

Your email address will not be published. Required fields are marked *

You may also like…