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IOLINE HIGH PERFORMANCE pH ELECTRODES
Iodine glass pH electrodes with temperature sensor.
high performance pH electrodes FEATURES:
  • Unique iodine/iodide reference system
  • Tris buffer compatible
  • Exchangeable bridge electrolyte
  • Integrated refill port
  • Excellent for a wide range of applications
  • Integrated temperature sensor
To Order Call 1-800-876-1172
High performance pH electrodes Options & Prices
On this page:

. High performance pH electrodes Product Description
. High performance pH electrodes Specifications
. High performance pH electrodes Options & Prices

Downloads (PDF):

. High performance pH electrodes Brochure
. High performance pH electrodes Manual*

*May take several minutes to download, depending on your internet connection speed.
Additional Information:

. High performance pH electrodes measurement values explained
. High performance pH electrodes calibration explained
. High performance pH electrodes calibration methods
. High performance pH electrode maintenance explained
. High performance pH electrode glass types explained
. High performance pH electrode reference systems and diaphragms explained
. Product Support

High performance pH electrodes Product Description
The IoLine high performance pH electrodes use a patented three chamber system with an iodine reservoir in the iodine/iodide reference electrode.  The reference system is a very important part of the high performance pH electrode.  The standard hydrogen electrode has proven too difficult in practical use to gain more than a mere theoretical importance.  The Ag/AgCl reference system, which is the most common reference system, can cause measuring instabilities originating from potential variations with changing temperature or reactions between silver ions and the measuring solution in the area of the diaphragm.  IoLine high performance pH electrodes, in contrast, have the advantage of a much lower temperature sensitivity and a metal ion free reference system.  The high performance pH electrode reference system is based on the following reaction:

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

The ORP is thereby described by the Nernstian equation:

EH = Eo + RT/zF * ln ([I3-] / [I-]3)

Whereby
Eo = 0.536 V, R = 8.314472 I/(K*mol), T in K, z = 2 und F = 96485.34 C/mol.

The stability of the reference system potential even at changing temperatures is the key to the IoLine high performance pH electrodes' superior response speed and measurement stability.  Additionally, these high performance pH electrodes have a higher accuracy when compared to conventional Ag/AgCl pH electrodes.

A further advantage of the high performance pH electrodes is the fact that the component determining the potential, i.e. the Iodine, is continuously being resupplied from the patented three chamber reservoir system.  The first high performance pH electrode chamber contains a supply which is used to refresh the reference electrolyte and the reference system of the second chamber with iodine in order to maintain the necessary I3-/I- concentration to create a stable reference potential.  The electrolyte link between the second and the third chamber, which contains the exchangeable bridge electrolyte, is provided by the high performance pH electrode's internal diaphragm.  The bridge electrolyte also provides the contact with the sample via the high performance pH electrode's diaphragm.

The high performance pH electrode's interior diaphragm is designed to allow only a minimal diffusion of I3-/I- (Tri-iodide/Iodide) into the bridge electrolyte.  Hence, the iodine consumption in the high performance pH electrode's reference electrolyte is very low and needs only very little re-supplying from the first chamber.  The supply is practically unlimited and guarantees a high stability of the potential and a long lifespan of the IoLine high performance pH electrodes.  However the high performance pH electrodes are built with an integrated refill port in the electrode's head that enables easy refilling of the reference system.  The high performance pH electrods have a built in temperature sensor to improve their performance even further over other pH electrodes.

Platinum diaphragm for fast response and high stability
Many of the high performance pH electrodes have a platinum diaphragm, developed by SI Analytics to increase the stability and response time of the iodine/iodide reference system.  The platinum diaphragm allows for remarkably constant and reproducible measuring characteristics when using the IoLine high performance pH electrodes.  It contains twisted platinum wires being fused into the glass shaft of the high performance pH electrode.  The defined spaces of the platinum wires guarantee a continuous and steady electrolyte flow and high stability of the high performance pH electrode's reference system in all media and at changing temperatures.

Applications
The IoLine high performance pH electrodes have a reference system that is 100% free of metal ions.  This means that the high performance pH electrodes will not contaminate the measuring media with metal ions allowing them to be used with Tris buffers.  The high performance pH electrodes are particularly good in applications where rapid temperature changes may occur.  For precision pH measurements in research and quality control i.e. chemistry, pharmacy, biotechnology, or food industry the high performance pH electrodes are an excellent choice.
High performance pH electrodes Specifications
pH Range: 0 to 14
Temperature Range: 23 to +212F (-5 to +100C)
Shaft: Glass
Zero Point: pH = 7.00 0.25
Reference System: iodine/iodide
High performance pH electrodes Options & Prices
Prices listed are for United States and Canada only.  Call or e-mail us for pricing in other countries.
Terms and Conditions

NOTE: For IoLine high performance pH electrodes without integrated temperature sensors click HERE
IOLINE HIGH PERFORMANCE pH ELECTRODE WITH BNC CONNECTOR
IoLine IL-pHT-A120MF-BNC-N High performance pH electrode (PN# 285113850)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-A120-BNC-N High performance pH electrode (PN# 285113860)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-A170MF-BNC-N High performance pH electrode (PN# 285114220)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-A170-BNC-N High performance pH electrode (PN# 285114230)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-MICRO-pHT-A-BNC-N High performance pH electrode (PN# 285114310)
Micro electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, cylindrical membrane, 400 MΩ membrane resistance, A-glass, length 1.6/5.1 in (40/130 mm), 0.47/0.2 inch (12/5 mm ).
Pricing
IoLine IL-pHT-H120MF-BNC-N High temperature high performance pH electrode (PN# 285114200)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-H120-BNC-N High temperature high performance pH electrode (PN# 285114210)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-H170MF-BNC-N High temperature high performance pH electrode (PN# 285114260)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-H170-BNC-N High temperature high performance pH electrode (PN# 285114270)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with BNC and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IOLINE HIGH PERFORMANCE pH ELECTRODE WITH DIN CONNECTOR
IoLine IL-pHT-A120MF-DIN-N High performance pH electrode (PN# 285113890)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-A120-DIN-N High performance pH electrode (PN# 285113900)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-A170MF-DIN-N High performance pH electrode (PN# 285113910)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-A170-DIN-N High performance pH electrode (PN# 285113920)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-MICRO-pHT-A-DIN-N High performance pH electrode (PN# 285114300)
Micro electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, cylindrical membrane, 400 MΩ membrane resistance, A-glass, length 1.6/5.1 in (40/130 mm), 0.47/0.2 inch (12/5 mm ).
Pricing
IoLine IL-pHT-H120MF-DIN-N High temperature high performance pH electrode (PN# 285113870)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-H120-DIN-N High temperature high performance pH electrode (PN# 285113880)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-H170MF-DIN-N High temperature high performance pH electrode (PN# 285114240)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-H170-DIN-N High temperature high performance pH electrode (PN# 285114250)
Electrode with ID function, temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with DIN and banana plug, ceramic diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 300 MΩ membrane resistance, H-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IOLINE HIGH PERFORMANCE pH ELECTRODE WITH OTHER CONNECTOR
IoLine IL-pHT-A120MF-R-NN High performance pH electrode (PN# 285114390)
Electrode with temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with Metrohm plug and two banana plugs, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 4.7 in (120 mm), 0.47 inch (12 mm ).
Pricing
IoLine IL-pHT-A170MF-R-NN High performance pH electrode (PN# 285114400)
Electrode with temperature sensor Pt 1000, 3.28 ft (1 m) fixed cable with Metrohm plug and two banana plugs, Pt diaphragm, electrolyte KCl 3 mol/l, Iodine/Iodide-reference system, sphere membrane, 200 MΩ membrane resistance, A-glass, length 6.7 in (170 mm), 0.47 inch (12 mm ).
Pricing
IOLINE HIGH PERFORMANCE pH ELECTRODE CALIBRATION SOLUTION
L 4004 4.00 pH Buffer, 250 mL (PN# 285138032) Pricing
L 7004 7.00 pH Buffer, 250 mL (PN# 285138049) Pricing
L 1004 10.01 pH Buffer, 250 mL (PN# 285138057) Pricing
L 4014 4.01 pH DIN Buffer, 250 mL (PN# 285138008) Pricing
L 6874 6.87 pH DIN Buffer, 250 mL (PN# 285138016) Pricing
L 9184 9.18 pH DIN Buffer, 250 mL (PN# 285138024) Pricing
L 400 4.00 pH Buffer, 1000 mL (PN# 285138727) Pricing
L 700 7.00 pH Buffer, 1000 mL (PN# 285138735) Pricing
L 100 10.01 pH Buffer, 1000 mL (PN# 285138719) Pricing
L 401 4.01 pH DIN Buffer, 1000 mL (PN# 285138098) Pricing
L 687 6.87 pH DIN Buffer, 1000 mL (PN# 285138102) Pricing
L 918 9.18 pH DIN Buffer, 1000 mL (PN# 285138119) Pricing
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