Myron L D-6 - Manual (Page 15)

B. Maintenance of the pH/ORP Sensor
The sensor well must be kept wet with a solution. Before replacing
the rubber cap, rinse and fill the sensor well with Myron L pH Sensor
Storage Solution. If unavailable, you can use an almost saturated KCl
solution, a saturated solution of table salt and tap water or pH 4 buffer
(ref. pH and ORP Practices to Maintain Calibration, pg. 24). NEVEr
uSE DISTILLED WATEr.
VII. SPECIFIC rECOMMENDED MEASurING PrOCEDurES
If the proper solution is not selected (KCl, NaCl, or 442), see Solution
Selection, pg. 15.
CAuTION:
• For Cond/Res/TDS measurements:
• The pH/ORP sensor well cap MuST be sealed.
• Any crystals or other residue around the cap MuST be rinsed
away to prevent contamination of the conductivity sample.
• The conductivity cell MuST be rinsed and filled at least 3 times
with sample before each measurement is taken.
• For pH/ORP measurements:
• Both the pH/ORP sensor well and the conductivity cell MuST
be rinsed and filled at least 3 times with sample before each
measurement is taken.
• After sampling high concentration solutions or temperature
extremes, more rinsing may be required.
A. Measuring Conductivity & Total Dissolved Solids (TDS)
WArNING: When using a Digital Dialysate Meter™ to check the
conductivity of dialysate, the solution conversion factor MuST be
set to the NaCl conversion factor.
• If the proper solution conversion factor is not selected, see Procedure
to Select a Solution, pg. 15, for instructions on setting it.
1. Rinse cell cup 3 times with sample to be measured. (This
conditions the temperature compensation network and prepares
the cell.)
2. Refill cell cup with sample.
3. Press or .
4. Take reading. A display of [- - - -] indicates an overrange
condition.
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