Paraffin content

Paraffin content is an important characteristic affecting the physical properties of petroleum crude oils, in particular their viscosity. Thus, measuring paraffin content has become a routine analytical requirement for product quality control. The analysis of paraffin content is performed by gas chromatography (GC) using a non-polar column and separation is based on boiling point.

Carbon distribution

Carbon distribution serves to express the gross composition of the heavier fractions of petroleum. Carbon distribution data can also be correlated with critical product performance properties.

Component identification and quantification

Using GC our chemists can provide an excellent means of confirming the presence or absence of a suspected compound in a mixture, provided an authentic sample of the substance is available.


BTEX is a group of volatile organic compounds (VOC’s) that includes benzene, toluene, ethyl benzene, and xylenes (ortho-xylene, meta-xylene, para-xylene). These compounds are found in petroleum derivatives, such as gasoline, crude oil, and diesel fuel.  BTEX analysis at Benchmark Lab provides concentrations of individual compounds.

Organic acids

Volatile organic acids are organic compounds with acidic properties.  The most common organic acids are the carboxylic acids, such as formic acid and acetic acid.  VOCs analysis at Benchmark Lab provides concentrations (ppm) of formic, acetic, propionic, acrylic, butyric, iso-butyric and valeric acids.


Quantification of ethylene glycol, diethylene glycol (DEG) and triethylene glycol (TEG) using a polar column with either direct injection or split/splitless injection.