User Manual

TB400-EU-EN V1.1 10/13

Calibration Procedure (100 NTU)

1. Lift the lid on the test chamber and remove the 0 NTU test solution bottle.

2. Gently shake the 100 NTU test solution bottle, insert it into the test chamber and close and

lock the cover.

3. Momentarily Press the "CAL" button. The LCD will flash CAL for 10 seconds.

4. When calibration is complete the LCD will return to normal operating mode.

NOTE: If the following error message appears "Error cannot be calibrated..." check the value of the

standard solution. If error message still appears complete the "Calibration Clear"

procedure.

CAL

100 ntu