Release 08/2014 - Spectroquant
®
Multy
Pipette 10 ml of the
sample into an empty
16-mm cell.
Measuring range: 0.5 – 15.0 mg/l N
16-mm cell
114537
Cell Test
Nitrogen (total)
Add to each cell 1 level
blue microspoon of
N-1K.
Add to each cell 6 drops
of N-2K, close with the
screw cap, and mix
Heat both cells in the
thermoreactor at 120 °C
(100 °C) for 1 hour.
Remove both cells from
the thermoreactor and
place in a test-tube rack
to cool to room tempera-
ture:
pretreated sample /
blank.
Add 1 level yellow
microspoon each of
N-3K into two reaction
cells, close with the
screw cap.
Pipette 10 ml of distilled
water into a second
empty 16-mm cell.
(Blank)
Select method 3 4 0 .
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Reaction time:
10 minutes
Press Enter to start
the countdown.
Shake both cells vigor-
ously for 1 minute to
dissolve the solid sub-
stance.
Add to one cell very
slowly 1.5 ml of the
pretreated sample with
pipette, close with the
screw cap, and mix
briefly.
Caution, cell becomes
very hot !
Add to the second cell
very slowly 1.5 ml of the
pretreated blank with
pipette, close with the
screw cap, and mix
briefly.
Caution, cell becomes
very hot !
(Blank cell)
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.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
Swirl both cells after
10 minutes.
