INTERNORMEN’s „In-house Laboratory Services" has the most modern equipment and special expert knowledge to immediately analyse problems and present solutions in teaming up with the Fluid Management Experts.

INTERNORMEN’s equipment in the oil analysis laboratory (abstract):

Atomic Emission Spectroscopy

The ICP-OES (Inductive couplet plasma-optical emission spectrum) serves for analysis of chemical elements. In the range of hydraulic- and lubrication filters the OES analysis is mainly applied for determination of wear, respectively of contamination. The ICP technology enables a determination of up to 72 chemical elements relating to quality and quantity.

Infrared Spectroscopy

The FTIR-method (Fourier-Transformation-Infrared spectroscopy) is the most advanced method of infrared spectroscopy and provides a current analysis over the wide range of the electromagnetic spectrum (7500-370 cm^-1). The infrared spectroscopy serves for determination of chemical compounds (molecules) and indicates chemical changes, polymerisation and impurities in comparison with known samples.

Wet chemical method of analysis

Testing of minerals and hydrocarbons; determination of water content according to Karl Fischer, ASTM.D 1744-64

The determination of the water content is based on the oxidation of sulphur dioxide through iodine, in the presence of water, as described by Bunsen. The water content is determined by end point titration.

Determination of total base or strong acid number (TAN/TBN)

The acid number indicates the amount of acid or base in mg that has to be added until the colour changes. The TAN (Total Acid Number), respectively the TBN (Total Base Number) indicates the ageing state of oils. A practical assessment is only possible by a comparison with new oil.

Oil Sample Analysis

• Contamination analysis according to
• NAS 1638 and ISO 4406:1999
•  Microscopic particle counting according
•  to ISO 4407
• Gravimetric analysis according to ISO 4405
• Microscopic contamination analysis
• Center viscosity (+40°C)
• Viscosity - temperature diagram
• pH-value measurement
• (only aqueous fluids)

Examination of Filter Elements

•  Bubble Point Test according to ISO 2942
•  Collapse pressure resistance according to ISO 2941
• Multi Pass test according to ISO 16889 (new element)
• p/Q-characteristic curve according to ISO 3968 (n.e.)
• Compatibility with hydraulic fluids according to ISO 2943
• Analysis of the element structure