Reference electrodes series RCE, RAE, RME, RRE

These support electrodes act as a second half-electrode against a proper indicating ion-selective electrode. They are even available as second bridge variants, making it possible to fill the second salt bridge according to customer requirements. At the bottom, all of these electrodes are terminated with sintered corundum ceramic. The reference electrodes are normally supplied with a BNC connector. Following customer requirements, they can be mounted as cable terminations. Electrodes designed by PT have a so-called contact tip on the end of the cable. RCE103, RAE 113, RME 123 comparison electrodes are supplied with a thin glass tube with a diameter of 5 mm. These electrodes are especially used during polarographic measurements. The RRE 131 type has a RedoX reference system.

Series 102, 112, 122 are two-transition reference electrodes (fig.1, 2, 3, 4)

103, 113, 123 - comparison electrodes with one-thin-end junction (fig.5).

101, 111, 121, 131 - reference electrodes with one transition (fig.6, 7).



Table of parameters of reference electrodes




Electrode
Type designation
Temperature range [°C]
Reference system
Internal electrolyte
Diaphragm type
Max.

Max. electrical resistance [kohm]
Max. electrolyte leakage

[ul/h]


calomel
RCE 101
0-70
Hg/Hg2Cl2
KCl solution
porous

corundum ceramics
3
10


bridge calomel
RCE 102
0-70
Hg/Hg2Cl2
KCl solution

/ 1M KNO3 bridge
6


calomel
RCE 103
0-70
Hg/Hg2Cl2
KCl solution
3


silver - silver chloride
RAE 111
0-80
Ag/AgCl
1 mln kCl
3


silver - silver chloride with bridge
RAE 112
0-80
Ag/AgCl
1M KCl

/ 1M KNO3 bridge
6


silver - silver chloride
RAE 113
0-60
Ag/AgCl
1 mln kCl
3


mercury - mercury sulfate
RME 121
0-60
Hg/Hg2SO4
saturated sol. K2SO4
3


Mercury - mercury sulfate with bridge
RME 122
0-60
Hg/Hg2SO4
saturated K2SO4 bridge solution

/ 1M KNO3
6


mercury - mercury sulfate
RME 123
0-60
Hg/Hg2SO4
saturated sol. K2SO4
6


Redox
RRE 131RX
0-80
Point
3 million kcal
6