pH Sensor (PH-BTA)
Specifications and User Guide


Primary Test: Does it read approximately 4 in its storage solution? Note: A reading of 13 to 14 indicates 0 volts and might mean that the sensor is defective or damaged.

Secondary Test: Take readings in fresh buffers, NOT distilled water! If no buffers are available, try it in vinegar (~ pH 2.5 to 3.5) and ammonia (~ pH 10.5 to 11.5). If readings do not change when the sensor is placed in different solutions, the sensor is possibly defective or damaged.

Related TIL Entries


Calibrate? Usually no. However, for the most accurate measurements with this sensor, we recommend calibration. It is a simple process that only takes a few minutes. Custom calibrations can also be stored directly onto the sensor.
For calibration instructions, see: How do I calibrate my sensor?
To save a calibration to a particular sensor, see : How do I save a custom calibration to my pH sensor?

Other Calibration-related TILs

Why won't my pH Sensor calibrate?
Where do I get pH buffer solutions?
What is the difference between the pH buffer capsules with order codes PHB and PH-BUFCAP?


The glass bulb of my pH Sensor is broken. Can it be repaired?
The pH electrode I have been using no longer seems to work or is slow to respond. Is there anything I can do to fix it?
My pH probe no longer gives an accurate reading. What should I do?
Why doesn't my pH Sensor read pH 7 in distilled or deionized water?
Will I get interference when I put two sensors in the same solution?
What type of liquids cause problems for the pH Sensor?
The liquid inside my pH Sensor is low or gone. Will it still work?
How old is my pH Sensor?

Maintenance and Storage

Where do I get pH or ORP Storage Solution? (Buffer Storage Solution)
What do I do about mold growth in my bottle of pH electrode storage solution?
How can I keep my pH or ORP storage solution from spilling when the sensor is in use?
My pH sensors were stored dry. Will they still work?
What is the best way to clean the glass bulb of the pH electrode?
Do any of your sensors require special storage?
I bought your pH buffer capsules. Can I make storage solution for my pH Sensors with this kit?
How do I dispose of my pH sensor?
My pH Sensor has mold inside the shaft. How do I remove it?
How old is my pH Sensor?

Related Vernier Products

for buffers pH 4, 7, 10, pH Buffer Capsule Kit (PH-BUFCAP)
pH Storage Solution (PH-SS) (500 mL bottle)
Storage Solution Bottles (5) (BTL) (5 bottles)