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Coating Flow-Cup Tests: Seconds Are Specific to the Cup
A flow time only becomes meaningful with the cup type, orifice and test conditions. Seconds from different cups are not automatically equivalent.
Updated · NANOLAB Knowledge
Practical approach
Record the exact method and use only the appropriate validated conversion where applicable.
A 30-second result from one cup cannot simply replace a 30-second specification written for another.
Decision limits
Do not choose a cup merely because it produces a convenient time. Confirm suitability for the material and range.
Related guidance
- Accuracy and Precision in Coating Tests: Repeatable Can Still Be Wrong
- Sample-Cup Blanks: Check the Container Before Blaming Rinse Water
- Coating Optical Tests: Separate Transmission from Image Sharpness
- Dynamic and Kinematic Viscosity in Coating Specifications
Method reference: BYK-Gardner: viscosity measurement. References describe their stated methods or products; they do not certify NANOLAB products or establish compatibility with an unlisted surface.
Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.
Continue reading
Accuracy and Precision in Coating Tests: Repeatable Can Still Be Wrong
Understand how repeatable readings can remain biased, and use suitable references before claiming accuracy in a coating comparison.
Sample-Cup Blanks: Check the Container Before Blaming Rinse Water
Use a sample-container blank to investigate unexpected water readings before replacing treatment equipment or blaming a coating.
Coating Optical Tests: Separate Transmission from Image Sharpness
The amount of transmitted light and the sharpness of an image viewed through a material are different properties.