Carbon Residue Apparatus (Conradson)

The Carbon Residue Apparatus (Conradson) manufactured by Glass Agencies is widely used in petroleum testing laboratories, oil refineries, and research institutions for determining the carbon residue content of petroleum products. This test is important for evaluating the tendency of fuels and lubricating oils to form carbon deposits when subjected to high temperatures. The amount of carbon residue left after evaporation and decomposition of a petroleum sample provides useful information about the composition and behavior of the fuel during combustion or heating processes. This analysis is commonly carried out on products such as lubricating oils, fuel oils, and other heavy petroleum fractions. The Carbon Residue Test using the Conradson method is performed by placing a measured quantity of the petroleum sample into a specially designed crucible. The crucible is then heated under controlled conditions inside a furnace or heating arrangement provided with the apparatus. During the heating process, the volatile components of the sample gradually evaporate while the heavier components undergo thermal decomposition. As the test continues, a carbonaceous residue remains in the crucible after the lighter components have been driven off. Once the heating process is completed, the crucible is allowed to cool and the remaining carbon residue is measured. The amount of residue obtained provides an indication of the fuel’s tendency to produce carbon deposits during use. Glass Agencies manufactures the Carbon Residue Apparatus (Conradson) using carefully selected materials suitable for petroleum testing laboratories. The apparatus structure includes a heating assembly, crucible holder, and supporting components that allow the test to be conducted safely and systematically. The design of the apparatus allows technicians to perform the heating process while maintaining controlled testing conditions. The compact arrangement allows the equipment to be installed conveniently on laboratory work surfaces without occupying unnecessary space. The parts of the apparatus are organized in a practical manner so that technicians can carry out the test procedure smoothly and observe the results accurately. The Carbon Residue Apparatus (Conradson) is commonly used in petroleum laboratories, oil refineries, fuel inspection departments, and research facilities where petroleum products are analyzed for quality control.