Hoppler Viscometer (Falling Ball)

Measures accurately the viscosity of transparent Newtonian liquids and gasses (with a special glass ball)

Main Features

• High accuracy through improved visibility of the falling ball.
• Minimized test time due to accurate return run of the ball.
• Reduced cost of ownership through increased lifetime of falling tube.
• Extended re-calibration periods through improved bearing support.

The Viscoball viscometer is mainly used for low viscosity substances such as used in:

• Mineral oil industry (oils, liquid hydrocarbons, …).
• Food industry (sugar solution, beer, milk, gelatine, fruit juice, …).
• Chemical industry (polymer solutions, solvents, resin solutions, latex dispersions,
• adhesive solutions, …).
• Cosmetic/Pharmaceutical industry (raw materials, glycerine, emulsions, suspensions,
• solutions, extracts, …).
• Petroleum industry (light crude, machine oil, crude petroleum,…).
• Fuels (petrol, diesel oil, paraffin, …).
• Paper industry (emulsions, pigment dispersion, paper additives, …).
• Paints and varnishes (printing inks, varnishes, water lacquers, inks,…).
• Detergents (liquid washing agents, washing-up liquids, tenside solutions,…).

Measuring principle

The rolling and sliding movements of a ball through the sample liquid are timed in an inclined cylindrical measuring tube. The sample viscosity is correlated to the time the ball requires to travel a defined distance. By turning the measuring tube upside down again the return of the ball may also be used for an additional measurement applying the return constant. The test results are given as dynamic viscosity in the internationally standardized, absolute units of mPa·s.