Water Quality Colorimeter reports non-zero concentrations with a clear ampoule.
Immediately after pressing the green calibration button with a clear calibration ampoule, the transmittance should be 100.0 and the absorbance should read 0.000; however, the reported concentrations of the ions will not be zero, despite there not being any ions in the clear calibration ampoule, which contains only distilled water. There are two reasons for this:
It is also possible to get negative or otherwise erroneous values for the concentration during measurement. Check the following:
* To verify that your system is performing properly, mix or test a standard solution of a concentration that is in the recommended range of the test, checking that the conditions 1-5 above are satisfied. If the water quality colorimeter fails the test, please contact Teacher Support to start a return on the unit.
Creation Date: 08/23/2010
Last Modified: 05/9/2014