CSIRO Petroleum -- Petroleum Geochemistry Group
- Australian-based commercial petroleum exploration firm (a sub-group of the Commonwealth Scientific and Industrial Research Organisation) offering multiple geochemical techniques. Lists analytical capabilities, along with descriptions of how various techni
- http://www-old.dpr.csiro.au/research/erp.html

Exploration Geochemistry Services
- Off-shore and on-shore geochemical sampling of gases, water, and sediments for oil and gas exploration. Provides example applications for geochemical exploration surveys.
- http://www.eti-geochemistry.com/exp/

Australian Laboratory Services
- International laboratory conglomerate with locations world-wide for geochemical analyses. Information on consulting, sample preparation, and available analytic techniques.
- http://www.alschemex.com/

Environmental BioTechnologies, Inc.
- Provides geochemical and biochemical services to the petroleum and energy industries. Company profile, descriptions of services, including product packages, and contact information.
- http://www.e-b-t.com/

Baseline DGSI Analytical Laboratories
- Provides geochemical services to the energy industry. Lists available services with price list, and company news. Clients can login separately.
- http://www.baselinedgsi.com/

Direct Geochemical Services
- Colorado-based surface geochemical exploration consultant. List and description of services and analytical abilities, sampling information, and example case studies.
- http://www.directgeochemical.com/

Isotech Laboratories, Inc. (Champaign, Il.)
- Information on the company, staff, and facilities, as well as the types of compositional, stable isotope, and radiogenic isotope analyses performed for the oil and gas industry. Analysis price lists and turnaround times are also provided, along with infor
- http://www.isotechlabs.com/

Geo-Microbial Technologies, Inc.
- Worldwide use of surface exploration techniques for oil and gas exploration, integrating geochemical evidence of hydrocarbons with geology and geophysics. Analytical techniques, surveys, survey design, and contact information.
- http://www.gmtgeochem.com/