LaMotte COD3 Plus, Руководство оператора

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COD3 Plus Colorimeter 10.16
Silica
, Low Range
PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press
ENTER
to select
Testing Menu
.
3. Select
All Tests
(or another sequence containing
087 Silica LR
) from
Testing
Menu
.
4. Scroll to and select 087 Silica LR 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 . (See Note)
7. Remove tube from colorimeter. Add 6 drops *Silica Reagent #1 (V-4466). Cap and
invert to mix.
8. Add 12 drops of *Silica Reagent #2 (V-4467). Cap and mix. Wait 5 minutes.
9. Add 8 drops of *Silica Reagent #3 (V-4468). Cap and mix. Wait 2 minutes.
10. Use the 0.1 g spoon (0699) to add one measure of Silica Reagent #4 (V-6284).
Cap and mix gently until powder has dissolved. Wait 5 minutes for full color
development.
11. At end of 5 minute waiting period, mix, insert tube into chamber, close lid and select
Scan Sample
. Record result.
12. Press to turn 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 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 are obtained.
Testing