Laboratory Equipment

Electrodes
Platinum and platinum alloys distinguish
themselves as electrode materials because
of their high electrical conductivity and
resistance to chemical attack.
Platinum/iridium 90/10 is used as the
electrode material to ensure mechanical
stability.
The following tables show different
electrode designs of which only the most
common are listed. To increase the surface
area, electrodes can be sand-blasted
if required (Fischer electrodes are always
sand-blasted). We will be pleased to
produce special electrodes on request.
Electrodes of platinum/iridium 90/10
30
Description Total Electrode Diameter Diameter Weight Heraeus
heigth heigth int. / ext. wire Standard
[mm] [mm] [mm] [mm] approx. [g]
L
L
10 5
L H Di / Da
Fischer electrode To increase the surface area of the wire, the electrode is sand-blasted.
Suitable for fast tests with high current densities in stirred
or still electrolytes.
inner electrode 200 40 32 (Da) 0.12 14.5 El 03/1
inner electrode 200 40 32 (Da) 0.25 20.0 El 03/2
outer electrode 125 50 38 (Di) 0.12 16.5 El 04/1
outer electrode 125 50 38 (Di) 0.25 23.0 El 04/2
H
H
Da
Di
24