Applied Membranes MYRON L COMPANY Ultrameter III 9PTK, Operation Manual

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Agitate and hold as many times as prompted.
Allow the display to cycle through all screens, e.g.,
“ edta ”, “ agit ” and “ hOld ”, at least once. Continue
holding steady until “ P
r
es cal ” displays.
Hold the unit steady before pressing cal to
accept readings.
C. Measuring Conductivity & Total Dissolved Solids (TDS)
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.
D. 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:
[ - - - - ]. Measure solution Conductivity instead.
E. Measuring Alkalinity
Prepare the materials required for titration: Reagent: A1, cell extender,
T-plunger, and 100 µL pipette with a clean tip installed.
nOte: If you do not complete each titration point within the 3-minute
timeout period, the unit exits the Alkalinity function. Between titrations,
the unit will automatically power off after the period of inactivity defined
in the AUTO OFF setting (ref. AUTO OFF, pg. 43). Press alK to start the
titration process over from step 1.
If you make a gross error in your titration method, e.g., you forget to add
sample to the cell, “ err ” will display. Start the titration over from Step 1
to obtain a reading.
1. Ensure pH protective cap is secure to avoid contamination.
2. Install the cell extender by pushing the base of the cell extender
into the conductivity cell until it is fully seated.
“ hOld ”: When “ hOld ”
displays, hold the 9P
still with bottom of case
parallel to the ground.
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