• Ramsbottom Carbon Residue Apparatus

Ramsbottom Carbon Residue Apparatus

ASTM D524, D6074; IP 14; ISO 4262; FTM 791-5002; NF T 60-117

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Determines the 'carbon residue' left after evaporation and pyrolysis of a sample oil in the Ramsbottom furnace, providing an indication of the deposit forming tendencies of fuels and guidelines for the processing of refinery products


  • Conforms to ASTM D524 and related specifications
  • Microprocessor temperature control with digital display and overtemperature cut-off

Thermostatically controlled coking furnace for five samples. Cast-iron block type furnace reaches the standard test temperature of 550°C (1022°F) rapidly and controls with ±1°C stability. Microprocessor temperature control has °C/°F switchable digital setpoint and display. Operator and equipment are protected by an overtemperature control circuit which automatically interrupts power to the unit should block temperature exceed the programmed cut-off point. 


ASTM D524, D6074; IP 14; ISO 4262; FTM 791-5002; NF T 60-117 


LxWxH,in.(cm): 16x21.5x14.5 (41x55x37)

Net Weight: 64 lbs (29kg)


Shipping Weight: 78 lbs (35kg)

Dimensions: 28x24x20 in. (71.1x61.0x50.8 cm) 

Additional Accessories

  • 332-007-001 Coking Bulb Borosilicate Glass, with capillary. Conforms to ASTM D524 specifications
  • 362-010-001 Sample Charging Syringe 
  • 382-018-001 Needle, 18 gauge, 2" 
  • K27320 Coking Bulb Filling Device. Convenient time saving device fills up to five coking bulbs at a time. Ideal for viscous fluids that are difficult to handle at room temperature.
  • K27200 Control Bulb - Stainless steel, with IC thermocouple. May be used with a thermocouple pyrometer* to verify compliance of the furnace with ASTM performance requirements.
  • K29330 Digital Thermometer, 115V
  • K29339 Digital Thermometer, 220-240V
  • Furnace Type: Cast iron block
  • Capacity: 5 coking bulbs
  • Maximum Temperature: 650°C (1200°F)
  • Controller Sensitivity: ±1°C (± 2°F)
  • Heater: 0-2400W, ceramic band heater