hydraulic press

Positive displacement pumps and pistons which pressure hydraulic systems have ultra-tight clearances to avoid pressure loss. Maintaining oil cleanliness is imperative. Keeping the oil dry is also important. We recommend to our clients that they allow us to perform microscopic analysis on their hydraulic oils if a material increase in wear particles or laser particle count occurs. We commonly perform filter analysis on these systems as well.

Routine Testing for Hydraulic Systems


Emission Spectroscopy Elemental Oil Analysis

  • MRT uses the Rotrode Spectrometer
  • We closely track changes in unwanted
    particles over time
  • Particle size detection down to 3 microns


  • We measure viscosity and viscosity index
  • At 40° C for industrial oils and 100° C for engine oils
  • Quantify severity of oil degradation and contamination
neutralization number

Neutralization Number

  • We measure Total Acid Number (TAN) and Total Base Number (TBN)
  • TAN detects oxidation and degradation and TBN
    detects remaining additives
Karl Fischer

Karl Fischer Water Titration

  • Water is the most common and arguably the most damaging oil contaminant
  • We detect water down to 4 ppm in any state
particle count

Particle Count Analysis (ISO 4406)

  • Laser light counts particles in a sample to the ISO 4406 standard
  • Unacceptable amounts of particles indicate a need for microscopic analysis

Additional Testing for Hydraulic Systems

microscopic particle

Microscopic Particle Examination

  • Utilized when wear or contamination has been
  • Fine tunes root cause analysis of the potential
filter analysis

Oil Filter Analysis

  • Microscopic analysis of filter media can pinpoint sources of problems
  • Filters trap all contaminants