LaMotte COD3 Plus, Руководство оператора

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COD3 Plus Colorimeter 10.16
Boron
PROCEDURE
1. This test requires a Reagent Blank. Rinse a tube (0290) with clear, colorless, boron
free water. Fill to 10 mL line with clear, colorless, boron free water.
2. Use the 1.0 mL pipet (0354) to add 2 mL of *Boron Buff er (4869). Cap and
mix.
3. Use the 0.15 g spoon (0727) to add one level measure of *Boron Indicator Powder
(4870). Press full spoon against side of jar to compress powder. Scrape off excess
powder on inside neck of bottle. Tap excess off spoon handle.
4. Cap and shake vigorously for 30 seconds.
5. Insert the tube into meter chamber. Close lid.
6. Start a timer set for 30 minutes. Do not open the lid during the waiting time. The
reaction is photosensitive.
7. Rinse a clean tube (0290) with Sample Water. Fill to the 10 mL line with sample
water. Repeat steps 2–4.
8. Insert the tube into the Dark Storage Chamber (0108). Close top.
9. Start a second timer set for 30 minutes. Do not open the chamber during the
waiting time. The reaction is photosensitive.
10. When 2 minutes remain on the fi rst timer (Reagent Blank), press and hold ON
button until colorimeter turns on.
11. Press and hold until colorimeter turns on.
12. Press
ENTER
to select Testing Menu .
13. Select All Tests (or another sequence containing 014 Boron ) from Testing
Menu .
14. Scroll to and select 014 Boron from menu.At the end of the Reagent Blank 30
minute waiting period, remove Reagent Blank tube from meter chamber. Invert
several times to mix.
15. Insert the tube into meter chamber, close lid and select Scan Blank .
16. Remove the tube from colorimeter.
17. At the end of the Sample Water 30 minute waiting period, remove Sample Water
tube from Dark Storage Chamber. Invert several times to mix.
18. Insert tube into meter chamber, close lid and select
Scan Sample
. Record result in
ppm boron.
19. Press to turn colorimeter off or press the EXIT to exit to a previous menu
or make another menu selection.
Testing