Myron L PS9TK - Manual (Page 34)

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10. Using the pipette, add 100 µL of Reagent: A1, close the cell
extender cap securely, then agitate and hold. Repeat as
prompted. “P
r
ES caL” will display.
11. Press caL to advance to the next titration point. “add”
alternating with “a1” displays; then “agit t2” alternating with
“hOLd” displays.
12. Tap the cell extender cap to dispel any solution clinging to the
cap back into the cell. Carefully open the cell extender cap so
as not to spill any solution.
13. Continue adding 100µL of Reagent A1, agitating and holding the
PS9 as prompted, then pressing caL as prompted. An alkalinity
value will display when the titration measurement is complete.
14. Press caL. The “caL” icon will display.
15. Adjust the displayed value to “100” using the UP or DOWN key.
The PS9 will not allow you to scroll up or down to “100” if it
is beyond ±10% of the reading. Ref. Total Return to Factory
Settings “FAC SEL”, pg. 42 to reset the Alkalinity Calibration to
the “FAC” setting along with all other calibrations.
16. Press caL to accept. The PS9 will automatically power off after
the period of inactivity defined in the AUTO OFF setting (ref.
AUTO OFF, pg. 43).
4. Hardness Calibration
Prepare the materials required for titration: Hardness Standard Solution
200PPM, Reagent: C1, Reagent: H1, Reagent: H2, Reagent: H3, cell
extender, T-plunger, 100 µL pipette with a clean tip installed, and two
extra clean tips.
nOTE: If you do not complete each titration point within the 3-minute
timeout period, the PS9 exits the Hardness function. Press haRD to
start the titration process over from step 1. Between titrations, the PS9
will automatically power off after the period of inactivity defined in the
AUTO OFF setting (ref. AUTO OFF, pg. 43).
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.
3. Rinse the conductivity cell cup and cell extender 3 times with
Hardness Standard 200PPM.