• Overview
  • Technical data

The Absorptometer-C measures the oil absorption of pigments and inorganic fillers

The instrument replaces the need for labor intensive, operator dependent manual rubout techniques by generating consistent and reproducible results with ease of operation. It is the primary instrument used in the Carbon Black Industry to determine the OIL number according to ASTM D 2414. Recently, its usage has expanded to the testing of silica, titania, and other mineral fillers.


Acquires and graphs the torque response and applies a third order polynomial analysis at 70% and 100% of the torque maximum. Evaluation fully meets ASTM D 2414 including new procedures B (end-point at 70% of maximum torque) and C (end-point at fixed but reduced torque level). Calculation of 3rd order polynomial in the significant part of the torque curve.

The Absorptometer "C" Data Acquisition System consists of the following major components:

• frequency inverter drive unit with precise torque measurement
• high-precision measuring mixer with special blades
• high-precision burette, sequencer-controlled titration rate for optimum test procedure
• 32 bit software for Windows XP, 2000 and Windows 7

Additional images

Absorptometer-C with burette Electronic burette Absorptometer curve

click pictures to magnify


Drive unit AC inverter motor
Power 0.75 kW
Speed default: 125 RPM (ASTM) variable with sequencer control (5 - 150 RPM) even during the running test
Speed constancy quartz precision
Torque measurement electronic
Titration rate default: 4.0 ml/min (ASTM) sequencer control even during the running test
Mains 230 V, 50/60 Hz, 4 A
Dimensions (W x H x D) 530 x 560 x 700 mm
...where quality is measured.