Release 08/2014 - Spectroquant
®
Multy
Pipette 5.0 ml of the
sample into a reaction
cell, close with the screw
cap, and mix.
Measuring range: 0.05 – 4.00 mg/l PO
4
-P 16-mm
cell
0.15 – 12.26 mg/l PO
4
16-mm cell
0.11 – 9.17 mg/l P
2
O
5
16-mm cell
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) we recommended to use
Spectroquant
®
CombiCheck 10, Cat.No. 114676, or the
Standard solution for photometric applications, CRM,
Cat.No. 125046.
Ready-for-use phosphate standard solution Certipur
®
,
Cat.No. 119898, concentration 1000 mg/l PO
4
3–
, can also
be used after diluting accordingly.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 10) is highly recommended.
114543
Cell Test
Phosphate
Determination of total phosphorus
= sum of orthophosphate, polyphosphate, and organophosphate
Add 1 dose of P-1K
using the green dose-
metering cap, close with
the screw cap.
Heat the cell in the
thermoreactor at 120 °C
(100 °C) for 30 minutes.
Remove the cell from
the thermoreactor and
place in a test-tube
rack to cool to room
temperature.
Fill approx. 10 ml of
distilled water into an
empty 16-mm cell (do
not add any reagents!),
close with the screw
cap.
(Blank cell)
Select method 3 8 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:
5 minutes
Press Enter to start
the countdown.
Add 5 drops of P-2K,
close with the screw
cap, and mix.
Shake the cell vigor-
ously to dissolve the
solid substance.
Add 1 dose of P-3K
using the blue dose-
metering cap, close with
the screw cap.
Insert the blank cell into
the cell compartment.
Press Zero .
Check the pH of the
sample, specified range:
pH 0 – 10.
If required, add dilute
sulfuric acid drop by
drop to adjust the pH.
