HF scientific Chlorine Pocket Photometer Field Portable - Manual (Page 10)

button to discharge the reagent.
c. Mix the reagent in the water sample by capping the cuvette and inverting it at least
three times.
STEP 3 - Measure the Chlorine Concentration.
a. Replace the cuvette in the optical well with one of the optical sides facing the indicating
arrow.
b. If testing for Free Chlorine, immediately press the
READ button and note the
concentration.
c. If testing for Total Chlorine, wait two minutes for the completion of the chemical
reaction between the sample and the reagent. Press the READ button and note the
concentration.
If additional samples are desired of the same sample water, step 1 can be omitted, and new
readings can be taken, provided the Pocket Photometer was not turned off & did not time out.
Warning: NEVER pour liquid directly into the sample well of the instrument always use a
cuvette.
Note: The instrument will turn off after approximately 5 minutes if no buttons are pressed.
4.0 Instrument Calibration
The instrument was calibrated and tested prior to leaving the factory and is suitable for
accurate use directly out of the box.
A 2.0 mg/l (2PPM) check standard is available which allows the user to periodically
check the instrument calibration.
21885 (1/09)
Rev. 1.7
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