Which of the following is not a failure in pH meters?
A. Defective electrodes
B. Defective input circuitry
C. Defective electronic circuitry
D. Defective calibration
Answer:D
Which of the following is not a failure in pH meters?
A. Defective electrodes B. Defective input circuitry C. Defective electronic circuitry D. Defective calibration
Explanation: Defective calibration is not a failure in pH meters. Failure occurs due to defective electrodes, defective input circuitry and defective electronic circuitry.