Myron L PS6FCE - Manual (Page 14)

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B. Measuring pH
1. Remove protective cap by squeezing its sides and pulling up.
2. Rinse sensor well 3 times with sample to be measured. Shake
out each sample to remove any residual liquid.
3. Refill both sensor wells with sample.
4. Press .
5. Note value displayed.
6. IMPORTANT: After use, fill pH/ORP sensor well with Myron L
pH Sensor Storage Solution and replace protective cap. If
Myron L pH Sensor Storage Solution is unavailable, you can
use a strong KCl solution, a pH 4 buffer, or a saturated solution
of table salt and tap water (ref. Cleaning Sensors, 2. pH/ORP,
pg. 32). Do not allow pH/ORP sensor to dry out.
C. Measuring ORP
The PS6 features the ability to measure the activity of oxidizing or
reducing chemicals in solution as ORP mV. The instrument also includes
an innovative Free Chlorine Equivalent (FC E ) feature (Measuring Free
Chlorine Using FC E , pg. 12) that uses ORP and pH to measure free
available chlorine (FAC) concentration in ppm. ORP mV and ppm of
free available chlorine (FAC) are the two most commonly used sanitizer
units of measure in water quality management.
1. ORP / FC E Mode Selection
The PS6 allows the user to choose between measuring oxidizing
sanitizers using either ORP mV or as parts per million (ppm) of equivalent
free chlorine. Use ORP to directly measure the oxidizing power of all
sanitizers like ozone, bromine, peracetic acid or chlorine. Use FC E to
measure the strength of oxidizing sanitizers as ppm of equivalent free
chlorine. To select between ORP and Free Chlorine modes:
1. Press .
2. Press and hold for approximately 3 seconds.
The current preference for ORP units of measure is displayed.
Factory setting for this preference is ORP mV. (See Figure 1, next
page.)