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Specifications
Concentration range:
Typical detection limit:
Activity range:
pH range (for direct measures): 3 to 7
Typical reproductibility:
Reponse time:
Sensitivity (slope):
Temperature range:
Checkpoint:
Design:
Dimensions :
Interference:
-6
10
M to 1 M
-6
1.5 x 10
M
-12
10
to 1 M provided that total
(free + complexed) Pb
tration is greater than 10
± 1 mV
Typically 20 s at medium to
high concentrations. A few
minutes at low concentrations
Approx. 95 %
0 to 120 °C
Approx. -90 ± 25 mV at 25°C
-2
in 10
M Pb(NO
REF251 reference electrode
with 0.1 M KNO
bridge is used.
The epoxy design resists most
reagents, e.g. CH
CH
CH
OH and CH
3
2
However, the following must be
avoided: CHCl
, DMF, CH
3
and strong acids.
Diameter:
12 mm
Length:
103 mm
Mercury, copper and silver ions
must only be present in trace
amounts (< 10
-8
sulphide poisons the electrode.
Ferric and other ions may exert
a redox influence depending on
the lead concentration.
Due to the formation of Pb(OH)
pH will also influence the
measurement.
15
2+
concen-
-6
M.
)
when
3
2
in the salt-
3
OH,
3
COCH
.
3
3
Cl
2
2
M). Also
,
2
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