SI Analytics®
IoLine pH Combination Electrodes with Fixed Cable and Integrated Temperature Sensor


Patented three-chambers system with Iodine reservoir in the iodine / iodide reference electrode. The component determining the potential, i. e. the Iodine, is continuously being resupplied. The first chamber contains a supply which is used to fresh up the reference electrolyte and the reference system of the second chamber with iodine in order to maintain the necessary I3- / I- concentration and thereby a stable reference potential. The electrolyte link between the second and the third chamber containing the exchangeable bridge electrolyte is provided by an interior diaphragm, allowing only a minimal diffusion. The bridge electrolyte also provides the contact with the sample via the diaphragm. The reference system is based on the following reaction:

I2 + I- + 2 e- <=> 3 I-.

The ORP is thereby described by the Nernstian equation:

EH = E° + RT / zF * ln ([I3-] / [I-]3)
whereby E° = 0.536 V, R = 8.314472 I / (K * mol),
T in K, z = 2 and F = 96485.34 C / mol.

The stability of the reference system potential even at changing temperatures is the key to the IoLine electrodesá superior response speed and measurement stability and, additionally, higher accuracy compared to conventional Ag / AgCl electrodes. A platinum diaphragm which is inherent to the MF version of the electrodes ensures a remarkable constancy and reproducible measuring. The diaphragm contains twisted platinum wires being fused into the glass shaft of the electrode.
Reference system:iodine / iodide
Zero point:pH = 7.00 ± 0.25
pH range:0 to 14
Temperature range:- 5 to + 100 °C
Shape of membrane:sphere
Technical Data:
Shaft:

glass, 12 mm Ø
Glass resistance:A-type: 200 MΩ
H-type: 300 MΩ
Temperature sensor:Pt 1000*
Application A-type:
Application H-type:
general, low ion media
high temperatures, optimised for alkaline area
SI Analytics®  IoLine pH Combination Electrodes with Fixed Cable and Integrated Temperature Sensor
TypeDiaphragmGlassID functionConnectionShaft length mmPUOrder No.CDC Price/Unit/EUR 
IL-pHT-A120MF-DIN-NplatinumA-typeyesDIN + banana plug, 1 m fixed cable120154216521 397.00Order
IL-pHT-A120-DIN-NceramicA-typeyesDIN + banana plug, 1 m fixed cable120154216531 389.00Order
IL-pHT-A120MF-BNC-NplatinumA-typeyesBNC + banana plug, 1 m fixed cable120154216541 397.00Order
IL-pHT-A120-BNC-NceramicA-typeyesBNC + banana plug, 1 m fixed cable120154216551 on demand 
IL-pHT-H120MF-DIN-NplatinumH-typeyesDIN + banana plug, 1 m fixed cable120154216561 404.00Order
IL-pHT-H120-DIN-NceramicH-typeyesDIN + banana plug, 1 m fixed cable120154216571 397.00Order
IL-pHT-H120MF-BNC-NplatinumH-typeyesBNC + banana plug, 1 m fixed cable120154216581 on demand 
IL-pHT-H120-BNC-NceramicH-typeyesBNC + banana plug, 1 m fixed cable120154216591 on demand 
IL-pHT-A120MF-BNC-CIplatinumA-typenoBNC + Chinch plug, 1 m fixed cable120154216601 on demand 
IL-pHT-A120MF-R-NNplatinumA-typenoMetrohm + 2 banana plugs, 1 m fixed cable120154216611 397.00Order
IL-pHT-A170MF-DIN-NplatinumA-typeyesDIN + banana plug, 1 m fixed cable170154216621 409.00Order
IL-pHT-A170-DIN-NceramicsA-typeyesDIN + banana plug, 1 m fixed cable170154216631 401.00Order
IL-pHT-A170MF-BNC-NplatinumA-typeyesBNC + banana plug, 1 m fixed cable170154216641 on demand 
IL-pHT-A170-BNC-NceramicsA-typeyesBNC + banana plug, 1 m fixed cable170154216651 on demand 
IL-pHT-H170MF-DIN-NplatinumH-typeyesDIN + banana plug, 1 m fixed cable170154216661 414.00Order
IL-pHT-H170-DIN-NceramicsH-typeyesDIN + banana plug, 1 m fixed cable170154216671 409.00Order
IL-pHT-H170MF-BNC-NplatinumH-typeyesBNC + banana plug, 1 m fixed cable170154216681 on demand 
IL-pHT-H170-BNC-NceramicsH-typeyesBNC + banana plug, 1 m fixed cable170154216691 on demand 
IL-pHT-A170MF-BNC-CIplatinumA-typenoBNC + Chinch plug, 1 m fixed cable170154216701 on demand 
IL-pHT-A170MF-R-NNplatinumA-typenoMetrohm + 2 banana plugs, 1 m fixed cable170154216711 on demand 
* IL-pHT-A120MF-BNC-CI with NTC 30 kΩ.