MEASURING HEAD GPX-105S FOR INSTRUMENTS OF 100 SERIES


The GPX-105S measuring head is designed for cooperation with the pH meters of 100 series. It ensures stable and accurate measurements and long time trouble free operation and it is characterised by a fast result stabilisation. Enables measurements in various samples of both pure and contaminated liquids and semi-solids. 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!

The GPX-105S can't be used for distilled, re-distilled or deionised water measurements.

The construction of the electrodes is unusual, precisely fitted sleeve put on the end of electrode creates an "intermediate junction” what protects the real junction (diaphragm) of the electrode against clogging, ensures stable measurements in these types of liquids or semi-liquid mass, in which other electrodes quickly stop working. Such construction is highly resistant to clogging by fats, proteins or other sediments.

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.

For storing and activation a rubber cap filled with distilled water is be put on the membrane.

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, the electrode's lifetime is longer than the standard electrodes.

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.

We pay your attention to the favourable price, much lower than the price of electrodes for similar purposes offered by their companies.

Sleeve for the measurements in semi-solid substances
Sleeve for measurements in liquids
Refilling electrolyte
Storing caps: beige for water sleeve, black for penetration sleeve


Technical Data
pH range 0 ÷ 14 pH
Zero point (pHE=0) 7.0 ±0.4 pH
Resistivity of the membrane (in 20°C) 200 ÷ 500 MΩ
Reference electrode dubble junction Ag/AgCl
Reference solution 3.0 M KCl + AgCl
Body diameter 6.0 / 12.0 ±0.5 mm
Membrane shape glass, conical
Diameter 12.0 mm
Temperature range 0 ÷ 60 °C, for short period usage 0 ÷ 80 °C
Body length (without cable socket) 120 mm ±5 mm
Minimal depth of immersing 20 mm
Maximal depth of immersing 100 mm
Body material polipropylene
Cable length about 1 m
Connector special plug for connecting with the 100 series meters