Millipore Spectroquant Multy Operating Manual page 149

Measuring range: 0.5 – 15.0 mg/l N
Pipette 10 ml of the Pipette 10 ml of distilled
sample into an empty water into a second
16-mm cell. empty 16-mm cell.
(Blank)
Remove both cells from Swirl both cells after
the thermoreactor and 10 minutes.
place in a test-tube rack
to cool to room tempera-
ture:
pretreated sample /
blank.
Add to one cell very Add to the second cell
slowly 1.5 ml of the very slowly 1.5 ml of the
pretreated sample with pretreated blank with
pipette, close with the pipette, close with the
screw cap, and mix screw cap, and mix
briefly. briefly.
Caution, cell becomes Caution, cell becomes
very hot! very hot!
(Blank cell)
Release 08/2014 - Spectroquant
Nitrogen (total)
16-mm cell
Add to each cell 1 level
blue microspoon of
N-1K.
Select method 3 4 0 .
Reaction time:
10 minutes
Press Enter to start
the countdown.
®
Multy
Add to each cell 6 drops
of N-2K, close with the
screw cap, and mix
Add 1 level yellow
microspoon each of
N-3K into two reaction
cells, close with the
screw cap.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) we recommended to use
®
Spectroquant CombiCheck 50, Cat.No. 114695, or the
Standard solution for photometric applications, CRM,
Cat.No. 125043 and 125044.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 50) is highly recommended.
114537
Cell Test
Heat both cells in the
thermoreactor at 120 °C
(100 °C) for 1 hour.
Shake both cells vigor-
ously for 1 minute to
dissolve the solid sub-
stance.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .