Ostwald Viscometer Manufacturer,Supplier and Exporter in India
Product Code : SCL-CLE-12368
Quick Answer: The Ostwald Viscometer is a U-tube borosilicate glass capillary for finding the kinematic viscosity of Newtonian liquids by timing their flow under gravity. Ceramic marks on the tube set the volume that is timed.
Last updated: October 2026
Key Features
Ostwald design U-tube glass capillary
Low-expansion borosilicate glass
Gravitational efflux timing between marks
Permanent ceramic graduation marks
For Newtonian fluids
Technical Specifications
Specification
Value
Type
U-tube capillary, Ostwald design
Material
Low-expansion borosilicate glass
Method
Gravitational efflux timing (Poiseuille’s law)
Marks
Permanent ceramic graduations
About This Product
Students draw liquid up past the upper mark and time how long it takes to fall to the lower mark through the capillary. Comparing that time with the time for a reference liquid such as water gives the viscosity, an application of Poiseuille’s law.
Frequently Asked Questions
How does the Ostwald Viscometer measure viscosity?
It times the gravitational flow of a fixed volume of liquid through a capillary between two marks, from which the kinematic viscosity is worked out.
.png)
.png)
.png)
.png)
.png)