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ISO 4262:1993

Petroleum products — Determination of carbon residue — Ramsbottom method

Standard Details

The principle of the method specified is weighing a test portion into a glass coking bulb having a capillary opening and placing it in a metal furnace maintained at a temperature of approximately 550 °C, thus quickly heating the test portion to the point at which all volatile matter is evaporated out of the bulb, while the heavier residue remaining in the bulb undergoes cracking and coking reactions during a specified heating period, removing the bulb, cooling it in a desiccator and weighing again. The method may be used to determine amounts of carbon residues in the range of 0,01 % (m/m) to 30,0 % (m/m), left after evaporation and pyrolysis.

General Information

Status : Published
Standard Type: Main
Document No: ISO 4262:1993
Document Year: 1993
Pages: 13
Edition: 2
  • Section Volume:
  • ISO/TC 28. Petroleum and related products, fuels and lubricants from natural or synthetic sources
  • ICS:
  • 75.080 Petroleum products in general

Life Cycle

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ISO 4262:1993
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