CLS offers the following services to the petroleum industry.

CLS is recognised as a centre of excellence for the interpretation and analysis of TPH petroleum related incidences. We provide our clients with a wide range of services from sampling to analysis and reporting by our experienced team. Within our laboratory, we offer the following hydrocarbon analysis suites;

Polycyclic Aromatic Hydrocarbons (PAH)

PAHs comprise of two or more benzene rings and many of them including benzo(a)pyrene have been found to be carcinogenic and mutagenic. They are ubiquitous in the environment and their occurrence is often correlated to the incomplete combustion of organic matter related to the use of petroleum products (automobile fuels, lubricating oils) or to combustion processes (fuel, wood and coal burning). The PAHs of most interest in environmental chemistry are the 16 USEPA PAHs as listed in the Table below, as these compounds were considered to pose a significant environmental risk.

Table 1. Compounds considered to pose a significant environmental risk.

Petrol Range Organics

The Petrol Range Organics (PRO) or Gasoline Range Organics (GRO) method at CLS includes the following analytes: benzene, toluene, ethylbenzene, and total xylenes (BTEX) as well as naphthalene and methyl-tertiary butyl ether (MTBE); alkanes/cycloalkanes in the n-C5 to n-C8 and n-C9 to n-C12 carbon ranges; and aromatics/alkenes in the n-C9 to n-C10 carbon range. These aromatic hydrocarbons are widely used in the chemical industry. At CLS we have determined the following Limits of Quantitation (LOQ) for these parameters.

Table 2. Petrol Range Organics (PRO’s)

Diesel Range Organics

Diesel Range Organics or Extractable Petroleum Hydrocarbons are a group of hydrocarbons found within the carbon range of n-C8 to n-C40. Typically petroleum products such as kerosene, diesel, lubrication oil and mineral oil can be determined by this method. Other hydrocarbon sources such as peat, coal, and tar can be identified using this technique.

Table 3. Diesel Range Organics (DRO’s)

*DRO, PRO and PAHs analysis for these Matrices is performed in its INAB accredited testing laboratory Reg No. 108T

Please contact Our team for more detailed information.


CLS performs an extensive range of environmental sampling and performs chemical and microbiological analysis in its INAB accredited testing laboratory Reg No. 108T. CLS deliver a professional service in all aspects of environmental monitoring from IPPC, Waste and Discharge licence requirements to air & noise assessments. We monitor in compliance with regulatory requirements at landfill and waste facilities and treatment plants. CLS performs flow & load surveys and has extensive knowledge and experience in sampling from surface water, groundwater and drinking water sources. CLS’s state-of-the-art laboratories are fully equipped with all necessary infrastructure to store, handle and analyse large numbers of samples.

Please see CLS Environmental Monitoring for more detailed information.
* CLS can provide accredited volatile hydrocarbon analysis (PRO C5-C12, BTEX/MTBE) and extractable petroleum hydrocarbon C8-C40 in waters, soil and sediment as defined in the scope of accreditation 108T.

Full details on services provided at Environmental Monitoring