Lamotte SMART3 Colorimeter User Manual download pdf (Page 212)

PROCEDURE

1. Use the 10 mL graduated cylinder (0416) to measure 10 mL of sample water.

Pour into glass test tube (0608).

2. Use the 1 mL pipet (0354) to add 1 mL of *Hydrochloric Acid, 2.5N (6251).

3. Use the 0.1 g spoon (0699) to add 2 measures of *Ammonium Persulfate

Reagent (6566). Add two drops of *Silver Nitrate Solution, 0.0141N (6346WT).

Mix until the powder has dissolved. The solution will be slightly cloudy at this

point.

4. Use 10 mL graduated cylinder (0416) to add 5 mL of Sodium Citrate, 10%

(6253).

5. Use a second 1 mL pipet (0354) to add 1 mL of *Ammonium Hydroxide, Conc.

(6537). Mix, then dilute to 25 mL with deionized water.

6. Use a third 1 mL pipet (0354) to add 1 mL of *Dimethylglyoxime, 1% (6254).

Mix. Wait 20 minutes for color development.

7. At end of 20 minute waiting period ﬁ ll a clean tube (0290) to the 10 mL line with

the developed test sample.

8. Fill a second clean tube (0290) to 10 mL line with deionized water or untreated

sample water. This is the blank.

9. Press and hold

until colorimeter turns on.

10. Press

ENTER

to select TESTING MENU.

11. Select ALL TESTS (or another sequence containing 063 Nickel) from

TESTING MENU.

12. Scroll to and select 063 Nickel from menu.

13. Insert the blank into chamber, close lid and select SCAN BLANK.

14. Insert test sample into chamber, close lid and select SCAN SAMPLE. Record

result.

15. Press to turn colorimeter off or press

EXIT

to exit to a previous menu or

make another menu selection.

NOTE: It is strongly suggested that a reagent blank 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 to scan a distilled or deionized water blank.

Then follow the above procedure to perform the test on a distilled or deionized

water sample. This test result is the reagent blank. Subtract the reagent blank from

all subsequent test results of unknown samples.

NICKEL SMART3 Test Procedures 11.10

Test Procedures

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Lamotte SMART3 Colorimeter User Manual Page 212