Myron L 6P and 4P - Manual (Page 14)

10
4. Take reading. A display of [- - - -] indicates an overrange
condition.
B. Measuring Resistivity
Resistivity is for low conductivity solutions. In a cell cup the value may
drift from trace contaminants or absorption from atmospheric gasses, so
measuring a flowing sample is recommended.
1. Ensure pH protective cap is secure to avoid contamination.
2. Hold instrument at 30° angle (cup sloping downward).
3. Let sample flow continuously into conductivity cell with no
aeration.
4. Press key; use best reading.
NOTE: If reading is lower than 10 kilohms display will be dashes:
[ - - - - ]. Use Conductivity.
C. Measuring pH (6P)
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, 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.
D. Measuring ORP (6P)
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.