LaMotte SMART Spectro Spectrophotometer - Manual (Page 77)

PROCEDURE
Use universal sample holder
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 Buffer (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 (29849). 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 spectrophotometer turns on.
11. Scroll to and select PROGRAMMED TESTS.
12. Scroll to and select ALL TESTS (or another sequence containing 8 Boron)
from TESTING MENU.
13. Scroll to and select 8 Boron from menu.
14. 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 spectrophotometer.
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 OFF button to turn the spectrophotometer off or press EXIT button to
exit to a previous menu or make another menu selection.
BORON SMART Spectro Test Procedures 2.11
Test P
rocedures