Digital Surface Tension Tester
Compact device using the Du Noüy ring method to measure surface tension of liquids in industrial quality control for inks, coatings, and chemicals. Falls under HTS 9027.89.80.90 as an apparatus for measuring surface tension. Delivers precise mN/m readings with automatic temperature compensation.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily a viscometer with tension function
Viscosity-focused instruments with secondary tension measurement go to viscosity subheadings.
If for non-liquid tension measurement applications
General physical property measuring devices fall under broader 9031 categories.
If integrated into coating application machines
Machine-specific testing components classify with the machinery.
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Import Tips & Compliance
• Provide method certification (e.g
• ASTM D971 compliance) in technical documentation
• Declare ring material and precision specs to prevent classification as basic lab ware
• Separate from weighing scales to avoid parts classification under 8423
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