A full polishing range.
From cutting and one-step correction to final finishing.
Coating Thixotropy: Keep Time Under Shear in the Test Record
Time-dependent flow behaviour requires a time-defined method. An immediate reading and a later reading may answer different questions.
Updated · NANOLAB Knowledge
Practical approach
Follow the agreed preparation, rest and measurement sequence, and preserve the time history.
Two operators using the same speed but reading at different times can obtain results that are difficult to compare.
Decision limits
Do not alter mixing or resting steps after seeing the result without documenting and validating the change.
Related guidance
- Standard Deviation vs Standard Error in Coating Test Reports
- Repeatability in Paint Thickness Measurements: Test the Operator
- Coating Samples and Metamerism: Compare Under Relevant Light Sources
- Coating Viscosity Checks: Avoid Air Bubbles in the Test Specimen
Method reference: AMETEK Brookfield: viscometer principles. 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
Standard Deviation vs Standard Error in Coating Test Reports
Distinguish standard deviation from standard error and label coating-test error bars so process variation is not hidden.
Repeatability in Paint Thickness Measurements: Test the Operator
Repeated readings help reveal whether measurement technique is stable. Do this before interpreting a small numerical change as material removed by polishing.
Coating Samples and Metamerism: Compare Under Relevant Light Sources
Two samples can match under one light source and differ under another. This is a reason to define lighting in appearance approval.