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 © Copyright: Conwy Valley Systems Limited  2000-2024

Conwy Valley Systems Limited,

West Acre, Llys Helyg, Deganwy

CONWY LL31 9BN, United Kingdom.

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A Geoscience Wales  founding member.

PETROG includes patent protected technology.


PETROG applied

PETROG is the perfect tool for point counting, whatever the application:

Coal Maceral Analysis

PETROG supports all relevant point counting standards: ICCP, TSOP, ISO 7404, Australian Standard 2856 (parts 2 & 3 in particular). The technical specification of the stepping stage and the implementation of the software allows the user to meet and exceed all relevant protocols and standards specifications.

Oil and Gas

Point counting is the one time that the rock is looked at in detail, complementing the overview analysis of core description and providing ground-truthing to the indirect and remotely sensed data such as petrophysics and geophysics.


PETROG supports all relevant point counting standards: ASTM C457/C457M -10a (2010) and ASTM C295 – 08 (2008) and ASTM C90 are fully supported by PETROG. See, for example, Chapter 2, of the New Edition of Concrete Petrography by Alan Poole.

Cement Clinker

Point-counting is an important tool for quality assurance of cement clinker. It is not replaced by tools such as Rietveldt refinement. Rather, visual examination of the material using reflected light microscopy on polished blocks is essential for ascertaining the minerals composition in addition to the chemical composition given by XRD/XRF techniques.

"A chemical analysis alone cannot describe the form, particle size, or mineralogy of the feed. SiO2 from a chemical analysis does not necessarily mean quartz, nor does Fe2O3 necessarily imply hematite. Analysis by X-ray diffraction (XRD) quite accurately records most of the detectable mineralogical varieties and with calibrated standards allows an estimation of abundance. But XRD cannot elucidate the particle form or size, and virtually misses the occurrence of amorphous materials such as glass or poorly crystalline materials such as limonite, FeO(OH), a major constituent in many iron sources for portland cement. Phases below the detection limit by XRD can easily be seen in the microscope. " (from MICROSCOPICAL EXAMINATION AND INTERPRETATION OF PORTLAND CEMENT AND CLINKER by Donald H. Campbell, Ph.D., SP030)


For asbestos monitoring, the U.S. Environmental Protection Agency states “Quantitative analysis involves the use of point counting. Point counting is a standard technique in petrography for determining the relative areas occupied by separate minerals in thin sections of rock.”  and in the UK, the Health and Safety Laboratory (HSE) lists polarised light microscopy (PLM) as an essential technique for the quantification of asbestos hazards. PETROG provides the only software and automated hardware support for these techniques. Tailored for asbestos analysis through working with asbestos analysts, PETROG builds on its fundamental strengths in petrographic point counting to provide the ideal solution for asbestos monitoring >>

Carbon Capture

 PETROG supports the use, in a similar way to it’s use in the Oil & Gas sector, to look at geology to evaluate the capacity for storage of captured carbon