Reference electrodes

| KE10, KE11 | SE10, SE11 |
| SE20, SE21 | SE20EB, SE21EB |

	KE10, KE11 calomel electrode for measurements in very small volumes long-term stable (electrolyte with saturated KCl solution and KCl reserve) shaft diameter: 5 mm standard glass cone (NSK 7) is available → for gas tight mounting in corrosion measuring cells with the according sleeve		SE10, SE11 reference electrode with Ag/AgCl reference system for measurements in very small volumes long-term stable (electrolyte with saturated KCl solution and KCl reserve) shaft diameter: 5 mm easy cleaning by removing the sleeve connector standard glass cone (NSK 7) is available → for gas tight mounting in corrosion measuring cells with the according sleeve
Type	KE10	KE11	SE10	SE11
Shaft	glass, Ø 12/5 mm	glass, Ø 12/5 mm	glass, Ø 12/5 mm	glass, Ø 12/5 mm
Shaft length	155 mm	155 mm	155 mm	155 mm
Reference system	calomel	calomel	Ag/AgCl	Ag/AgCl
Electrolyte (KCl)	fluid (saturated) with KCl reserve	fluid (saturated) with KCl reserve	fluid (saturated) with KCl reserve	fluid (saturated) with KCl reserve
Bridge electrolyte	-	-	-	-
Diaphragm	sleeve junction	1 x ceramic	sleeve junction	1 x ceramic
Temperature range	-5 ... 60 °C	-5 ... 60 °C	-5 ... 80 °C	-5 ... 80 °C
Minimum immersion depth	10 mm	10 mm	10 mm	10 mm
Application	small volume sample, aqueous solutions	small volume sample, aqueous solutions	small volume sample, aqueous solutions	small volume sample, aqueous solutions
Electrical connection	4 mm banana socket	4 mm banana socket	4 mm banana socket	4 mm banana socket
Order code	KE10 KE10NSK7	KE11 KE11NSK7	SE10 SE10NSK7	SE11 SE11NSK7

	SE20, SE21 reference electrode with Ag/AgCl reference system for measurements in connection with ion-selective electrodes ong-term stable (electrolyte with saturated KCl solution and KCl reserve) shaft diameter: 12 mm		SE20EB, SE21EB reference electrode with Ag/AgCl double-junction reference system for measurements in critical mediums measurements in connection with ion-selective electrodes long-term stable (electrolyte with saturated KCl solution and KCl reserve) the bridge electrolyte is defined by the customer
Type	SE20	SE21	SE20EB	SE21EB
Shaft	glass, Ø 12 mm	glass, Ø 12 mm	glass, Ø 12 mm	glass, Ø 12 mm
Shaft length	120 mm	120 mm	160 mm	160 mm
Reference system	Ag/AgCl	Ag/AgCl	Ag/AgCl	Ag/AgCl
Electrolyte (KCl)	fluid (saturated) with KCl reserve	fluid (saturated) with KCl reserve	fluid (saturated) with KCl reserve	fluid (saturated) with KCl reserve
Bridge electrolyte	-	-	customer request	customer request
Diaphragm	flexible sleeve junction	1 x ceramic	flexible sleeve junction (outside), 2 x ceramic (inside), (double junction reference system)	1 x ceramic (outside) 2 x ceramic (inside), (double junction reference system)
Temperature range	-5 ... 100 °C	-5 ... 100 °C	-5 ... 100 °C	-5 ... 100 °C
Minimum immersion depth	20 mm	10 mm	20 mm	10 mm
Application	polluted or low ionic mediums	aqueous solutions	polluted mediums, strong acids and bases	critical mediums (strong acids and bases)
Electrical connection	S7 coaxial lab plug head, fixed cable	S7 coaxial lab plug head, fixed cable	S7 coaxial lab plug head, fixed cable	S7 coaxial lab plug head, fixed cable
Order key	SE20 ...	SE21 ...	SE20EB ...	SE21EB ...