Camlab Lovibond MD 610, Инструкция по эксплуатации

Страница: 192 / 371

186
MD 610_2d 11/2019
Nitrate
with Tablet and Powder
0.08 – 1 mg/l N
1. Fill a clean vial (24 mm Ø) with 10 ml of the water
sample , closetightly with the cap.
2. Placethe vial in the sample chamber making sure that
the marks
are aligned.
3. Press ZERO key.
4. Removethe vial from the sample chamber and empty
the vial.
5. Fill the Nitrate test tube with 20 ml of the water
sample .
6. Add 1 level spoon of Nitrate Test powder .
7. Closethe tube tightly with the cap and swirl vigorously
for one minute.
8. Add one NITRATETESTtablet straight from the foil
to the water sample.
9. Closethe tube tightly with the cap and swirl vigorously
for one minute.
10. Stand the tube upright and after the reducing agent
has settled to the bottom, gently invert it three to four
timesso asto complete the flocculation of the reducing
agent. Thenlet the tube stand for a further 2 minutes.
Openthe tube and wipe around the top of the tube with
a clean tissue to remove any residuals of the reducing
agent.
11. Carefully decant 10 ml of the treated solution into
the vial (24 mm Ø) used for zeroing, ensuring that no
reducing agent is carried over.
12. Add one NITRITELRtablet straight from the foil to the
water sample and crushthe tablet using a clean stirring
rod.
6
0
2
prepare Zero
press ZERO