Lovibond MD 610, Instruction Manual

Page: 201 / 360

193
MD 610_1c 09/2015
11. Close the vials with the caps and shake to mix the
contents (at least 15 seconds, Note 8).
12. Press [ ] key.
Wait for a reaction period of 2 minutes .
After the reaction period is finished proceed as follows:
13. Open two TN Acid LR/HR (Reagent C) vials and
add 2 ml of the digested, treated blank to one vial
(this is the blank).
14. Add 2 ml of the digested, treated water sample to
the other TN Acid LR/HR vial (this is the sample).
15. Close the vials with the caps and swirl the vials gently
several times to mix the contents (10 x, Note 9).
(CAUTION: Vials warm up) .
16. Place the vial (the blank) in the sample chamber making
sure that the
l
marks are aligned.
17. Press ZERO key.
Wait for a reaction period of 5 minutes .
After the reaction period is finished the measurement
starts automatically.
18. Remove the vial from the sample chamber.
19. Place the vial (the sample, Note 10) in the sample
chamber making sure that the
l
marks are aligned.
20. Press
TEST
key.
The result is shown in the display in mg/l Nitrogen.
Notes and Reagent: see page 194
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
Countdown
5:00
Countdown
2:00
start: