Test Procedures
PROCEDURE
Use universal sample holder.
1. Press
ON
button to turn spectrophotometer on.
2. Scroll to and select
PROGRAMMED TESTS
.
3. Scroll to and select
ALL TESTS
(or another sequence containing
94 Surfactants
) from
TESTING MENU
.
4. Scroll to and select
94 Surfactants
from menu.
5. Rinse a tube (0290) with sample water. Fill to 10 mL line with sample.
6. Insert the tube into chamber, close lid and select
SCAN BLANK
.
7.
Remove the tube from Spectro.
8. Use the 0.5 g spoon (0698) to add 0.5 g pH Adjustment Powder (4509). Cap and mix
until powder dissolves.
9. Use the 0.1 g spoon (0699) to add two measures of Sodium Chloride Reagent (4877).
Cap and mix until powder disintegrates.
10. Use the 1.0 pipet (0354) to add 2.0 mL of *DS Indicator (4508).
11. Cap and shake for 1 minute.
NOTE: Bubbles on the sides of the tube will interfere with the results. Swirl the tube to
remove bubbles if they are present.
12. Wait 5 minutes. DO NOT MIX.
13. Insert tube into chamber, close lid and select
SCAN SAMPLE
. Record result in ppm
LAS.
14. Press and hold
OFF
button to turn the spectrophotometer off or press
EXIT
button 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 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. It is necessary to determine the reagent blank only when a new lot
number of reagents is obtained.
SURFACTANTS
SMART Spectro 2 Test Procedures 05.02.16
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