Millipore Spectroquant Multy Operating Manual page 174

Measuring range: 11 – 1070 mg/l SiO
5 – 500 mg/l Si
Check the pH of the Select method 4 2 1 .
sample, specified range:
pH 2 – 10.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Add 4 drops of Si-1,
Add 2.0 ml of Si-2 with
close with the screw
pipette, close with the
cap, and mix.
screw cap, and mix.
Insert the blank cell into Insert the cell containing
the cell compartment. the sample into the cell
Press Zero . compartment. Press
Test .
Release 08/2014 - Spectroquant
Silicate (Silicic Acid)
16-mm cell
2
16-mm cell
Fill approx. 10 ml of
distilled water into a
16-mm cell (do not add
any reagents!), close
with the screw cap.
(Blank cell)
Reaction time:
2 minutes
Press Enter to start
the countdown.
®
Multy
Pipette 5.0 ml of distilled
water (Water for analysis
®
EMSURE , Cat.No.
116754, is recommen-
ded) into a 16-mm cell.
Add 4 drops of Si-3 ,
close with the screw
cap, and mix.
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) ready-for-use silicon stan-
®
dard solution Certipur , Cat.No. 170236, concentration
1000 mg/l Si, can be used after diluting accordingly
(Atten tion! Do not store standard solutions in glass
vessels - see section "Standard solutions").
100857
Test
Add 0.50 ml of the
sample with pipette,
close with the screw
cap, and mix.
Reaction time:
2 minutes
Press Enter to start
the countdown.