LaMotte COD3 Plus, Руководство оператора

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Sulfate
, High Range COD3 Plus Colorimeter 10.16
PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press
ENTER
to select
Testing Menu
.
3. Select
All Tests
(or another sequence containing
089 Sulfate HR
) from
Testing
Menu
.
4. Scroll to and select 089 Sulfate HR from menu.
5. Rinse a clean tube (0290) with sample water. Fill to the 10 mL line with sample.
6. Insert tube into chamber, close lid and select Scan Blank .
7. Remove tube from colorimeter. Use the 0.1 g spoon (0699) to add one measure
of *Sulfate Reagent (V-6277). Cap and shake until powder dissolves. A white
precipitate will develop if sulfates are present. Wait 5 minutes.
8. Mix tube again. Insert tube into chamber, close lid and select Scan Sample . Record
result.
9. Press to turn colorimeter off or press EXIT to exit to a previous menu or
make another menu selection.
NOTE: If the sulfate concentration of the test sample is greater than 100 ppm, it is
recommended that a dilution be made with deionized water and the results multiplied
by the dilution factor.
A white fi lm is deposited on the inside of test tubes as a result of the sulfate test.
Thoroughly clean and rinse test tubes after each test.
For the most accurate results, samples and reactions should be at 25±4°C.
Testing