Petroleum coke, commonly referred to as petcoke, is a carbon-rich solid material generated as a byproduct during the oil refining process. As refineries aim to maximise efficiency and increase the yield of high-value fuels such as gasoline from crude oil, this residual carbon material is formed.
Why is Petroleum Coke Testing important?
Petroleum coke testing is essential to:
- Control sulphur content and emissions
- Optimise combustion efficiency
- Prevent operational issues in kilns and boilers
- Ensure compliance with environmental standards
- Maintain consistent fuel quality
Key Parameters
Typical petroleum coke testing parameters that are tested in our petroleum testing laboratory include:
| Parameter | Test method |
| Ash on Dry Basis | IS 1448 (Part-126): 2023 |
| Real Density | IS 1448 (P-133): 2018 |
| Total Sulphur on Dry Basis | IS 1448 (Part-33): 2021 |
| Gross Calorific Value | IS 1350 (Part-2): 2022 |
Why Choose Qualitek Labs for Petroleum Coke Testing?
Qualitek Labs offers reliable and precise petroleum coke (pet coke) testing services designed to support industrial performance and regulatory compliance. Our NABL-accredited laboratory follows standardised methods to ensure accurate and consistent analysis of critical fuel parameters.
We provide detailed insights into key properties such as sulfur content, calorific value, and ash, enabling industries to optimise fuel efficiency, control emissions, and maintain process stability. Our team combines technical expertise with efficient workflows to deliver dependable results within quick turnaround times.
We provide detailed insights into key properties such as sulfur content, calorific value, and ash, enabling industries to optimise fuel efficiency, control emissions, and maintain process stability. Our team combines technical expertise with efficient workflows to deliver dependable results within quick turnaround times.
FAQ
Petroleum coke testing analyses the chemical and physical properties of pet coke to determine its quality and industrial suitability.
Pet coke testing ensures fuel efficiency, quality consistency, and compliance with environmental and industry standards.
Key parameters include, ash, sulfur content, volatile matter, fixed carbon, and calorific value.
Petroleum coke (pet coke) is primarily used as a fuel and carbon source in industries such as cement, power generation, steel, and aluminium production. It is also used in the manufacture of electrodes, anodes, and other carbon-based products.
The core difference is that GPC (Graphite Petroleum Coke) is produced by graphitizing CPC (Calcine Petroleum Coke) at temperatures exceeding (2500ºC to 3000ºC, resulting in a higher, more ordered carbon structure and lower sulfur content compared to CPC, which is calcined at lower temperatures 1200ºC to 1400ºC. While GPC is essentially “refined” CPC, both are considered essential carbon-based materials depending on the specific requirements of the foundry or smelting operation.
Petroleum coke generally has a high calorific value, typically ranging between 7,500 and 8,500 kcal/kg, depending on its grade and composition.

