Tech Note 1145 Detail

Turbidimeter Fails to Calibrate

Affected Products:

PM-2122 NOT A VALID PART NUMBER

Problem/Symptom:
The light does not turn off at the conclusion of the turbidity calibration

PASCO Solution:

Reattempt the calibration after checking the following:

  1. The cuvette is completely filled with the distilled water. (The meniscus can scatter light.)
  2. There are no visible air bubbles. (Air bubbles will also scatter light. Tap the cuvette when filled to remove any bubbles.)
  3. The cuvette sides have been wiped clean. (Fingerprint oil will scatter light.)
  4. If you are using a battery-powered interface, check that the batteries have at least 40% charge.

If these suggestions do not resolve the issue, please contact Teacher Support.

Creation Date: 06/17/2011
Last Modified:
Mod Summary: