Phosphate
Determination of orthophosphate
Measuring range: 0.5 – 25.0 mg/l PO
4
-P 16-mm
cell
1.5 – 76.7 mg/l PO
4
16-mm cell
1.1 – 57.3 mg/l P
2
O
5
16-mm cell
114546
Cell Test
Select method 3 8 6 . Pipette 5.0 ml of the
sample into a reaction
cell, close with the
screw cap, and mix.
Pipette 5.0 ml of distilled
water into a second
reaction cell, close with
the screw cap, and mix.
(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 .
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) ready-for-use phosphate
standard solution Certipur
®
, Cat.No. 119898, concentra-
tion 1000 mg/l PO
4
3–
, can be used after diluting accordingly.
Check the pH of the
sample, specified range:
pH 0 – 10.
If required, add dilute
sulfuric acid drop by
drop to adjust the pH.
Release 08/2014 - Spectroquant
®
Multy
Important:
For the determination of total phosphorus = sum of
orthophosphate, polyphosphate and organophosphate
either Phosphate Cell Test, Cat. No. 114543, 114729, and
100673 or Phosphate Test, Cat. No. 114848 in conjunction
with Crack Set 10/10C, Cat. No. 114687 resp. 114688 can
be used.
