Journal of Research of the National Bureau of Standards Section A Physics and Chemistry · 1971 · 17 citations · 0 references
EngineeringMechanical EngineeringFood RheologyInstrumentationRheologyCapillary RheologyMechanical MeasurementViscoelastic PropertiesCalibration ProceduresCapillary ViscometryRheometer MeasurementsSystematic Error AnalysisSystematic Error CalibrationSystematic Error CorrectionViscometryViscosity Measurement
An absolute measurement of the viscosity of di(2-ethylhexyl) sebacate with a torsional pendulum viscometer. The apparatus and calibration procedures are discussed and a detailed study of errors is made. The systematic error was estimated to be less than ±0.07 percent and the variability was shown to be less than ±0.07 percent. There is an unexplained difference of 0.3 to 0.4 percent between these measurements and measurements with a capillary instrument.