Thermo Fisher Scientific C101 Colorimeter - Manual (Page 10)

Measurement
C401/301/201/101/102/103/104/105 Colorimeter
6
2 MEASUREMENT
2.1 General Information
The waterproof C401/301/201/101/102/103/104/105 Colorimeter allows
you to measure up to seven parameters - namely the pH, Cyanuric acid,
Free Chlorine, Total Chlorine, Chlorine Dioxide, Bromine and Ozone of a
sample and reports the results in appropriate units (ppm or pH). Each
specific measurement has its own range as listed in the specifications.
The meter will go through a power sequence as shown below.
Meter’s Model Number Meter’s Revision Number Measurement Mode Selection
Figure 5: Example of C401 Colorimeter power up sequence
An accurate colorimeter measurement depends on good measurement
techniques. Factors such as clean sample vials, positioning of vial in the
sample well, using a vial with a light shield cap, meter calibration, handling
of meter, and others, have to be taken into consideration.
NOTE: Do not pour liquid directly into the sample well of the instrument.
Always use a vial. The instrument will only accurately measure the sample
when vials sealed with the black caps are used. The black cap serves as
both seal and a light shield.
NOTE: Do not attempt to clean the sample well. The optics may be
damaged.
NOTE: This instrument is designed to measure solutions contained in the
custom made glass vials and therefore the use of other type of sample vials
or sample cells may result in inaccurate measurements.
NOTE: Reagents’ MSDS can be obtained from
http://www.eutechinst.com/techtips/msds.htm