COMBINATION pH ELECTRODES IJ44A, IJ44At, IJ44C


The IJ44A, IJ44At and IJ44C pH electrodes have a unique, specific construction which enables measurements of liquids, semi solid samples or soil without the risk of clogging the electrolytic junction (diaphragma).
This electrode enables measurements in very wide range of samples:
WATER, WASTEWATER, CONTAMINATED SAMPLES, COSMETICS, DETERGENTS, ORGANIC MATERIALS, PROTEINS, LUBRICANTS, OILS, WINE, MEAT, CHEESE..... ALL THIS MAY BE MEASURED WITH ONE ELECTRODE!
They shouldn't be used for ultra pure water measurements like distilled or deionised water.
The IJ44A model reacts faster in the clean water and in solutions with lower temperatures. Has a better mechanical resistance.
The IJ44C model has a lower sodium error, which occurs during measurements of liquids with values 13 to 14 pH which include sodium ions.
The IJ44At model has a built in temperature sensor (Pt-1000B resistor).
Unusual construction ("intermediate junction”) protects the real junction (diaphragma) of the electrode against clogging, ensures stable measurements in these types of liquids or semi-liquid masses, in which other electrodes quickly stop working.
Elements of glass electrodes are protected by a plastic body.
Plastic sleeve which protects the junction is an integral part of the electrode. It is impossible to use the electrode without the sleeve. The sleeve may be exchanged and it's kind depends on the type of the measured sample.
Machine processing of the glass ensures high precision of matching elements in glass and plastic electrode, which is a must for a proper operation. When properly handled and maintained, the electrode's lifetime is longer than the standard electrodes. The average lifetime is between 2 and 4 years.
Periodically, on average every month, the sleeve should be taken off the old electrolyte gel should ba washed out and new one poured in.
The cone shape membrane is hardened what enables direct penetrating measurements for example in a meat or a cheese.
The electrodes don't include mercury and fit directly to the Eppendorf test tubes.

Please turn your attention to the favorable price, much lower than of the electrodes for similar purposes made by other manufacturers.

Sleeve for the measurements in semi-solid substances
Sleeve for measurements in liquids
Refilling electrolyte


Technical Data
pH range 0 ÷ 14 pH
Zero point 7.0 ±0.4 pH
Electrode type intermediate junction Ag/AgCl
Electrolyte concentrated 3M KCl
Membrane Glass, conical
Temperature range 0 ÷ 60 °C
Diameter 12.0 mm
Length 120 mm ±5 mm
Minimal immersion level 20 mm
Maximal immersion level 100 mm
Body material polypropylene
Cable length about 1 m
Connector BNC-50
(+ RCA in IJ44At)