114833
Cell Test
Measuring 0.10 – 5.00 mg/l Pb
range: Expression of results also possible in mmol/l.
Lead
Add 5 drops of Pb-1K
into a reaction cell and
mix.
Shake the cell vigorous-
ly to dissolve the solid
substance.
Place the cell into the
cell compartment. Align
the mark on the cell with
that on the photometer
= Result A
Quality assurance:
To check the measurement system (test reagents,
measurement device, and handling) w
e 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.
Important:
For the determination of total lead a pretreatment
with Crack Set 10
C, Cat.No. 114688, or Crack Set 10,
Cat.No. 114687, and thermoreactor is necessary.
Result can be expressed as sum of lead ( Pb).
Check the total hardness
of the sample.
Add 1 level grey micro-
spoon of Pb-2K to the
already measured cell,
close the cell with the
screw cap.
Add 5.0 ml of the sample
with pipette
, close the
cell with the screw cap,
and mix.
Check the pH of the
sample, specified range
:
pH 3 – 6.
If required, add dilute
ammonia solution or
nitric acid drop by drop
to adjust the pH.
Place the cell into the
cell compartment. Align
the mark on the cell with
that on the photometer
= Result B
Result A
– Result B
= mg/l Pb
Samples of
total hardness 0 –10 °d
Samples of
total hardness > 10 °d
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
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