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Technical data


Viscosity measurement with the falling ball viscometer

Item No. P2140400

Principle

Due to internal friction among their particles, liquids and gases have different viscosities. The viscosity, a function of the substance's structure and its temperature, can be experimentally determined, for example, by measuring the rate of fall of a ball in a tube filled with the liquid to be investigated.

Benefits

  • Viscosity measurement for two fluids and any mix ratio
  • Viscosity measurement for different temperatures possible
  • Angle of falling ball viscometer can be changed
  • Interdisciplinary use also in applied sciences or physical chemistry

Tasks

Measure the viscosity

  1. of methanol-water mixtures of various composition at a constant temperature,
  2. of water as a function of temperature and
  3. of methanol as a function of temperature.

From the temperature dependence of the viscosity, calculate the energy barriers for the displace ability of water and methanol.

Learning objectives

  • Liquid
  • Newtonian liquid
  • Stokes law
  • Fluidity
  • Dynamic and kinematic viscosity
  • Viscosity measurements

Scope of supply

Falling ball viscometer 18220-00 1
Thermometer, 24...+ 51 ºC, for Falling ball viscometer 18220-02 1
Immersion thermostat Alpha A, 230 V 08493-93 1
Cooling coil for thermostat Alpha A 08493-01 1
External circulation set for thermostat Alpha A 08493-02 1
Bath for thermostat, makrolon 08487-02 1
Retort stand, h = 750 mm 37694-00 1
Right angle boss-head clamp 37697-00 1
Universal clamp with joint 37716-00 1
Pycnometer, calibrated, 25 ml 03023-00 1
Volumetric flasks, Boro, various sizes 36548-00 1
Beakers, Boro, high form, various sizes 46032-00 1
Beakers, Boro, low form, various sizes 46054-00 1
Pasteur pipettes, 250 pcs 36590-00 1
Rubber caps, 10 pcs 39275-03 1
Rubber hose, various diameters 39282-00 6
Digital stopwatch, 24 h, 1/100 s and 1 s 24025-00 1
Wash bottle, plastic, 500 ml 33931-00 2
Methanol 500 ml 30142-50 2
Water, distilled 5 l 31246-81 1
Hose clamp for 8-12 mm diameter 41000-00 10
Rubber hose, various diameters 39290-00 1
Tubing connector, ID 6-10mm 47516-01 2

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com