Millipore Spectroquant Multy Operating Manual page 131

Measuring range: 0.05 – 5.00 mg/l Pb
Check the pH of the Select method 2 6 1 .
sample, specified range:
pH 3 – 6.
If required, add dilute
ammonia solution or
nitric acid drop by drop
to adjust the pH.
Add to the second cell Insert the blank cell into
8,0 ml of distilled water the cell compartment.
with pipette, close with Align the mark on the
the screw cap, and mix. cell with that on the pho-
(Blank cell) tometer. Press Zero .
Important:
For the determination of total lead a pretreatment
with Crack Set 10C, Cat.No. 114688, or Crack Set 10,
Cat.No. 114687, and thermoreactor is necessary.
Release 08/2014 - Spectroquant
Lead
24-mm cell
Pipette 0.50 ml each of
Pb-1 into two 24-mm
cells.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
®
Multy
Add to each cell 0.50 ml
Pb-2 with pipette, close
with the screw cap, and
mix.
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) we recommended to use
®
Spectroquant CombiCheck 40, Cat.No. 114692.
Ready-for-use lead standard solution Certipur
Cat.No. 119776, concentration 1000 mg/l Pb, can also be
used after diluting accordingly.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 40) is highly recommended.
109717
Test
Add to one cell 8.0 ml of
the sample with pipette,
close with the screw cap,
and mix.
®
,