Purpose and Application
The Visco Test Blade Model 301 is designed to assess the application consistency of paints and coatings by measuring the run-off time of a liquid stirred with a spatula. It minimizes the influence of surface tension, allowing for accurate determination of run-off time. The device is practical for both stirring and measuring viscosity, making it convenient for use in practice.

Test Principle
The device is made of non-corrosive spring steel with two precisely dimensioned slits, functioning like a capillary viscometer. The flow rate depends on the slit width and the liquid's viscosity and density. The run-off time using the Visco Test Blade is significantly shorter than with a DIN flow cup.

Performance and Evaluation of Test
To perform the test, the blade is immersed in the liquid, ensuring the slit is covered while the upper hole remains free. The blade is lifted, and the time is measured until the fluid meniscus reaches the lower hole. Proper immersion depth and pre-wetting of the blade are crucial for accurate results. For paints with volatile solvents, the run-off time should not exceed 10 seconds to minimize errors.

Technical Data
Dimensions: Length 180 mm, Width 20 mm, Height 0.5 mm
Net weight: approx. 0.015 kg

Order Information
Order No. 0021.02.31 - Visco Test Blade acc. to Rossmann, Model 301, in plastic carry-case.
Note: Subject to technical modifications.