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Sulfur Titrator

Sulfur Titrator
Sulfur Titrator

Determination of hydrogen sulfide and mercaptan sulfur in hydrocarbons and oils

The Sulfur Titrator is designed for the determination of sulfur compounds as hydrogen sulfide and mercaptan sulfur in liquid hydrocarbons and oils.

The measurement uses a volumetric titration method with silver nitrate solution in an anhydrous medium.

This measurement generates silver sulfide (Ag2S) and silver mercaptides.

The analysis must be done in an inert gas atmosphere to avoid an oxidation of sulfur compounds by air and thus false measurement results.

The device is conform to standards ISO 3012, ASTM D 3227,  UOP 163,  UOP 212.

The titration speed is precisely adjusted to the reaction rate with control algorithms. Two end points get indicated – first for hydrogen sulfide and second for mercaptan sulfur.

At the end of the measurement, results are shown in mg/kg (ppm) hydrogen sulfide and/or mercaptan sulfur or several other units.


The Sulfur Titrator is suitable for analysis of

  • fuels (gasoline, kerosines, aviation turbine fuels)
  • volatile distillates, middle distillates
  • liquified petroleum gas (LPG)
  • hydrocarbon gases
  • liquid hydrocarbons
  • naphtha (petroleum)
  • low boiling oils
  • light cycle oils
  • heavy cycle oils


  • Complete measuring system for the determination of hydrogen sulfide and mercaptan sulfur
  • Fully-automatic volumetric titration
  • Precise control of the titration parameters by special control algorithms
  • Preset measurement method allows an immediate start
  • The result output can be adjusted to your needs by using a formula generator

Data sheet


ECH Elektrochemie Halle GmbH
Otto-Eißfeldt-Straße 8
06120 Halle (Saale)

Tel.: +49 345 279570-0
Fax: +49 345 279570-99
Mail: info@ech.de

Sales and Service Center UK

ECH Scientific Limited
Building 69, Wrest Park, Silsoe
Bedfordshire, MK45 4HS
United Kingdom

Tel.: +44 1525 404747
Fax: +44 1525 404848
Mail: info@ech.de


Sulfur Titrator