LaMotte SMART3 Colorimeter - Manual (Page 208)

PREPARATION OF *TMK INDICATOR
NOTE: Prepare *TMK Indicator daily. Keep out of direct sunlight.
1. Fill test tube (0778) to the 10 mL line with *Propyl Alcohol (4863).
2. Add one *TMK Tablet (4862).
3. Use tablet crusher (0175) to completely crush tablet.
4. Cap and mix. Shake vigorously for 30 seconds.
PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press ENTER to select TESTING MENU.
3. Select ALL TESTS (or another sequence containing 057 Mercury) from
TESTING MENU.
4. Scroll to and select 057 Mercury from menu.
5. Rinse a tube (0290) with sample water. Fill to 10 mL with sample.
6. Insert the tube into chamber, close lid and select SCAN BLANK.
7. Remove the tube from colorimeter.
8. Use the 1.0 mL pipet (0354) to add 3 mL of *Acetate Buffer (4864). Cap and
mix.
9. Use the 0.5 mL pipet (0353) to add 0.5 mL of prepared *TMK Indicator. Cap
and mix.
10. Wait one minute.
11. Insert tube into chamber, close lid and select SCAN SAMPLE. Record result
as ppm Mercury.
12. Press to turn the colorimeter off or press
EXIT
to exit to a previous
menu or make another menu selection.
NOTE: For best possible results, a reagent blank should be determined to account
for any contribution to the test result by the reagent system. To determine the
reagent blank, follow the above test procedure using distilled or deionized water.
This test result is the reagent blank. Subtract the reagent blank results from all
subsequent test results of unknown samples. It is recommended that a reagent
blank be determined each time *TMK Indicator is prepared.
MERCURY SMART3 Test Procedures 11.10
Test P
rocedures