Millipore Spectroquant Multy Operating Manual page 59

Measuring range: 5 – 100 µg/l As
Check the pH of the Place 350 ml of the
sample, specified range: sample into an Erlen-
pH 0 – 13. meyer flask with ground
joint.
Add 1.0 ml of As-4 with Pipette 5.0 ml of As-5
pipette and mix. into the absorption tube.
Transfer the solution Select method
from the absorption tube
into a 16-mm cell, close
with the screw cap.
Release 08/2014 - Spectroquant
Arsenic
16-mm cell
Add 5 drops of As-1
and mix.
Add 1.0 ml of As-6 with
pipette to the solution in
the Erlenmeyer flask
and mix.
5 0 . Fill approx. 10 ml of
distilled water into a
16-mm cell (do not add
any reagents!), close
with the screw cap.
(Blank cell)
®
Multy
Add 20 ml of As-2 with
pipette and mix.
Add 3 level red dosing
spoons of As-7. Imme-
diately attach the ab-
sorption tube to the
Erlenmeyer flask.
Insert the blank cell into
the cell compartment.
Press Zero .
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) ready-for-use arsenic stan-
®
dard solution Certipur , Cat.No. 119773, concentration
1000 mg/l As can be used after diluting accordingly.
The measurement results are expressed in µg/l.
101747
Test
Add 1 level green dosing
spoon of As-3 and
dissolve.
Leave to stand for
2 hours. During this time
carefully swirl the flask
several times or stir
slowly with a magnetic
stirrer.
Insert the cell containing
the sample into the cell
compartment. Press
Test .