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ISO 4262:1993

Current Revision

Petroleum products -- Determination of carbon residue -- Ramsbottom method

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 4262
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 28
Publish Date Document Id Type View
Not Available ISO 4262:1993 Revision