Falling ball viscometer
Article No: 18220-00
For the precise measurement of the viscosity of transparent Newtonian liquids in combination with a circulation thermostat. The fall time of a ball with density r₁ in the test liquid with density r₂ is measured while it moves through an inclined cylindrical fall tube. From this fall time and a constant K taken from the apparatus table, the dynamic viscosity η is determined. All-in-one solution: supplied ready for use including ball set, thermometer, calibration certificate and cleaning tools. Standards-compliant: conforms to DIN 53015 and ISO 12058. Wide measuring range: approx. 0.6 mPa·s to > 50,000 mPa·s using interchangeable balls. Precise temperature control: integrated temperature jacket, measurements possible from –20 … +150 °C. Closed measuring system: prevents evaporation, air ingress and skin formation. High reproducibility: defined measuring position (10°) and excellent repeatability and comparability. Easy operation: ball return by tilting, no disassembly required. Maintenance- and cleaning-friendly: cleaning tools included, replaceable fall tube and jacket tube. QM-suitable: factory-calibrated, calibration with traceable reference liquids possible. Precision fall tube with distance markings, mounted in a pivoting glass cylinder on a stand base. Hose nozzles for connection to a thermostat bath. Measuring range: 0.6 … 75,000 mPa·s (cP). Temperature range: –20 … +150 °C. Accuracy: 0.1 °C. Fall tube diameter: 15.95 mm. Included in delivery: 6 falling balls. Thermometer –1 … +26 °C (graduation 0.1 °C). Cleaning device. Ball gauge. Ball tweezers. Case and test certificate.