LaMotte CORROSION CONTROL Test Kit - Manual (Page 8)

5. If plunger tip reaches the bottom line on the titrator scale (200 ppm)
before the endpoint color change occurs, refill titrator and continue
titration. When recording test results, original amount of reagent
titrated (200 ppm) must be included.
NOTE:
Do not move the titrator plunger after P alkalinity endpoint
has been obtained, as the T Alkalinity titration is a continuation of
the P Alkalinity titration.
TOTAL (T) ALKALINITY
NOTE: If only Total Alkalinity is to be tested, perform Steps 1, 7 and 8
only, using a full titrator in Step 8.
6.
Without moving plunger remove titrator and titration tube cap from
titration tube containing sample from Step 4.
7. Add two drops *Alkalinity Indicator #2 (3869) to titration tube.
Replace cap, swirl to mix. a BLUE color will appear.
8. Re-insert titrator in cap and continue titration until BLUE color
changes to GREEN. Read test result as T Alkalinity in ppm CaCO
3
.
Include in test result total amount of titration reagent added. (See
Step 5).
9. Record results in Step 8. To calculate AF Factor, refer to chart on
page 4.
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