Millipore Spectroquant Multy Operating Manual page 145

Measuring range: 0.3– 30.0 mg/l NO
1.3– 132.8 mg/l NO
Check the pH of the Select method 3 2 3 .
sample, specified range:
pH 3 – 9.
If required, add dilute
sodium hydroxide
solution or hydrochloric
acid drop by drop to
adjust the pH.
Shake both cells vigor- Reaction time:
ously for 1 minute to 5 minutes, measure
dissolve the solid sub- immediately.
stance. Press Enter to start
the countdown.
Release 08/2014 - Spectroquant
Nitrate
-N 24-mm cell
3
24-mm cell
3
Pipette 10 ml of the
sample into a 24-mm
cell.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
®
Multy
Pipette 10 ml of distilled
water into a second
24-mm cell.
(Blank cell)
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Quality assurance:
To check the measurement system (test reagents,
measurement device, and handling) a ready-for-use
nitrate standard solution Certipur
concentration 1000 mg/l NO
accordingly.
101842
Test
Add to each cell 1 level
blue microspoon of
NO -1, immediately
3
close tightly with the
screw cap.
®
, Cat.No. 119811,
-
, can be used after diluting
3