Analytical Laboratory
Test Capabilities


The Velcon Laboratories Analytical Lab houses a wide range of capabilities to support the development of filtration products. These capabilities include the testing of filters, in-house quality control testing, and the analysis of customer fluid samples. Using our broad range of cutting edge technology and diagnostic equipment, Velcon is committed to manufacturing quality products and providing industry leading filtration. Equipment and testing is performed within the guidelines of ASTM, ISO, SAE, and ANSI standards. At Velcon, we stand behind our products, as we continue to seek solutions to ensure quality fuel whenever, and wherever, it’s needed.


30 keV SEM Scanning Electron Microscope (SEM) with Energy Dispersive X-Ray Spectroscopy (EDS)

  • Analyze both liquid and solid samples up to 120,000X magnification using a high energy beam of electrons in a raster scan pattern in order to determine topography, composition, and electrical conductivity.
  • Determines the elemental composition or chemical characterization of a sample, or discriminate particulate.
  • Particularly useful in assessing the composition of individual particles, or granules, from various sources for quality control and failure analysis. Returned cartridge contamination can be isolated on the scale of micrometers and individually analyzed. Root cause analysis of the contamination source can then be performed.

Fourier Transform Infrared (FT-IR) Spectrometer

  • Analyzes both liquid and solid materials, using infrared light to determine molecular composition.
  • Measures the amount of absorbance and reflectance through a material sample across the infrared spectrum.
  • Results of the spectral analysis are compared against a database of patterns in order to determine particulate contamination of organic compounds on filter media.
  • The FT-IR analysis is helpful in determining particulate contamination on various filter media, as well as additional sources. Once a contaminant is identified, possible sources can be traced to alleviate the downstream filtration issues.


  • Determines the following characteristics of flow porometry for media and filter samples:
  • Pore Size Distribution
  • Bubble Point Measurement
  • Air Permeability
  • Accurately measures the characteristics of filter media for new product development.
  • Allows for benchmark testing of Velcon media against competitor cartridges.

Particle Counter and Automatic Bottle Sampler

  • Determine both the particle sizing characteristics and the particle distribution of a liquid sample with the single and multi-pass filter method within the guidelines of ASTM and ISO standards.
  • Uses hydraulic fluid as a baseline for bottle sampling.
  • 8 Channel Particle Counter reports results down to 1µm levels.
  • Results of an analysis are characterized as ISO Codes, Beta Ratios, and Efficiency Ratings.
  • Particle size distribution analyses are helpful in determining the most efficient and effective filtration cartridges for use in various applications. A large accumulation of 1µm particulate in a sample will require specific filtration, as opposed to an accumulation of 25µm> particles.

Karl Fischer Titration

  • A coulometric titration of a liquid sample in order to determine trace amounts of water.
  • Results are reported at PPM levels and percentage of total water is established.
  • KF Titration measures the amount of total water within a sample, including both free water and saturated water. Free water content is calculated based on fuel saturation curves.
  • Establishing the amount of free water present in fluid samples is helpful in determining the best possible filtration solution.
  • Before and after filtration tests of free water present in a sample provide immediate feedback for quality control and verification of the filtration process.

Interfacial Tensiometer (IFT)

  • Measures the surface tension, or energy per unit area, of a liquid sample using the Du Noüy Ring method.
  • Interfacial tension measurements are used to determine the addition of surfactants within a fluid sample, which will decrease the surface tension. A higher IFT value indicates lower surfactant levels.
  • Surfactants within fuel can disarm coalescer elements, which could allow water to bypass filtration, and migrate downstream to an aircraft. Surfactants are also known as detergents, emulsifiers, or wetting agents.
  • Important to identify the emulsification characteristics of fluid samples.


  • Measures the water separation characteristics of fuels by determining the presence of surfactants, which affect the ability to separate free water from fuel.
  • A fluid sample is mechanically mixed with a water sample to achieve emulsification. The results are characterized on a scale of 1-100, with 100 being the maximum value of an unprocessed sample. A lower value on the scale, the more surfactant present in a fluid sample, hampering its ability to coalesce properly.

Ultraviolet (UV) Spectrophotometer

  • Measures the amount of absorbance and reflectance through a material sample across the Ultraviolet spectrum.
  • Results are measured as transmittance through a liquid sample, and then reported as absorbance.
  • Determines surfactant, surface active agent, concentrations within fluid samples based on the amount of light absorbance at specific wavelengths.

Microscope Station

  • General spectroscopy and close-up imaging of particulate contamination for analysis.
  • Allows for in-depth analysis of returned cartridges, or “filter autopsies”.
  • Magnified image capturing can facilitate in particulate contamination sources.

Viscosity & pH Balance Station

  • The viscosity of a liquid sample can be determined.
  • The pH levels of a liquid sample can be determined.

Analytical Balances

  • Measures the amount of gravimetric contamination.
  • Allows for accurate, and efficient results of particulate analysis.
  • Helpful in determining the amount of total suspended solids within a fluid sample for filter life estimation, as well as effective filtration methods.