What Are the Detection Methods for Petroleum Carbon Residue?

2025-08-21

Common petroleum carbon residue analysis methods include the micro method (corresponding to the SH109 Automatic Carbon Residue Tester) and the Conradson method (GB/T268).

Micro Method (SH109 Automatic Carbon Residue Tester)
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- Scope of application: Its results are consistent with the Conradson method (GB/T268). It is suitable for testing petroleum products composed of distillate oils with carbon residue values below 0.10% (m/m), and can also measure those with values between 0.10% (m/m) and 30.0% (m/m).
- Principle: Put the weighed sample into a sample tube. Under an inert nitrogen atmosphere, heat it to 500℃ according to a specified temperature program. Volatile substances generated are carried away by nitrogen, and the percentage of residual carbonaceous residue relative to the original sample is the micro carbon residue value.
- Features: High automation (auto-calculation, optional printing, real-time process display), precise control (stable temperature, ±2.0℃ constant temperature at 500℃), and strong practicality (data storage, multi-specification test tube adaptation).

Conradson Method (GB/T268)

- Scope of application: A traditional method for determining petroleum carbon residue, with results consistent with the micro method.
- Overview: Heat a certain amount of sample in a Conradson tester crucible to evaporate, crack and burn it. After combustion, cool and weigh the residual carbonaceous residue, expressed as a percentage of the sample mass.
- Features: High data recognition, but lower automation, longer time-consuming, and higher requirements for operators' standardization compared with the micro method.

Flash Point Tester

Distillation Tester

Viscosity Tester

Cone Penetration Apparatus

Oxidation Stability Tester

Texture Analyzer

Petrochemical Testing Equipment

Lubricating Oil Testing Equipment

Oil Testing Equipment

Grain Testing Equipment

Feed Testing Instrument

Food Testing Instruments

Pharmaceutical Testing Instruments

Activated Carbon Ignition Point Tester

Other Instrument

What Are the Detection Methods for Petroleum Carbon Residue?

What Are the Detection Methods for Petroleum Carbon Residue?