93
MD 610_2d 11/2019
Chromium, total (Cr(lll) + Cr(Vl))
with Powder Pack
0.2 – 2 mg/l Cr
Digestion:
1.
Fill a clean vial (16 mm Ø) with
10 ml of water sample
.
2.
Add the contents of
one PERSULF.RGTFORCRPow-
der Pack
straight from the foil into the vial.
3.
Closethe vial tightly with the cap and swirl severaltimes
to mix the contents.
4.
Heat the vial for
120 minutes
in a preheated thermo-
reactor at a temperature of
100°C
.
5.
Removethe vial from the thermoreactor.
(CAUTION: The vials are hot!).
Invert the vial and allow to cool to room temperature.
Performing test procedure:
Insert the adapter for 16 mm Ø vials.
6.
Placethe pre prepared vial in the sample chamber mak-
ing sure that the marks
are aligned.
7.
Press
ZERO
key.
8.
Removethe vial from the sample chamber.
9.
Add the contents of
one CHROMIUM HEXAVALENT
Powder Pack
straight from the foil to the water sample.
10. Closethe vial tightly with the cap and swirl severaltimes
to mix the contents.
11. Placethe vial in the sample chamber making sure that
the marks
are aligned.
12. Press
TEST
key.
Wait for a
reaction period of 5 minutes
.
After the reaction period is finished the measurement
starts automatically.
The result is shown in the display in mg/l total Chro-
mium.
Ø 16 mm
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
Countdown
5:00
1
2
5
Содержание Lovibond MD 610
Страница 14: ...8 MD 610_2d 11 2019...
Страница 15: ...9 MD 610_2d 11 2019 Part 1 Methods...
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Страница 279: ...273 MD 610_2d 11 2019 Notes 1 SO3 Na2 SO3 Reagent Formof reagent Quantity Order No SULFITE LR Tablet 100 518020BT...
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Страница 307: ...301 MD 610_2d 11 2019 Part 2 Instrument Manual...
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Страница 363: ...357 MD 610_2d 11 2019 Part 3 Enclosure...