Customs tariff classification turns on actual function, with specific headings prevailing over residual entries for scientific instruments.

Customs tariff classification of imported scientific instruments turned on their actual function and the evidence on record. The spectrophotometer was held to measure colour properties in the optical range, and the twin vision scanner was treated as capturing spectral composition and converting colour data into digital form, so the importer's classification was upheld and the residual objection under Chapter Note 5(E) was rejected. The analyzer mastersizer was accepted as laboratory equipment used for particle-size measurement and analysis, so classification under the residual heading was set aside in favour of the specific heading. The governing principle stated that a specific tariff description prevails over a residual entry when the goods squarely fit that description.

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Issues: (i) Whether the imported spectrophotometer and twin vision scanner were correctly classifiable under the headings claimed by the importer, or under the headings proposed by Revenue; and (ii) Whether the analyzer mastersizer was correctly classifiable under Heading 9027 or under Heading 9031.

Issue (i): Whether the imported spectrophotometer and twin vision scanner were correctly classifiable under the headings claimed by the importer, or under the headings proposed by Revenue.

Analysis: The spectrophotometer was found, on the basis of its described function, to measure colour properties in the optical range, and therefore fell within the scope of the relevant spectrophotometer entry. The twin vision scanner was found to capture spectral composition and convert colour data into digital data; that conversion itself was treated as a data processing function. The objection based on Chapter Note 5(E) was rejected because the equipment was accepted as performing the function attributed to it in digital form.

Conclusion: Revenue's challenge to the classification of items 1 and 2 failed, and the classification accepted by the importer was upheld.

Issue (ii): Whether the analyzer mastersizer was correctly classifiable under Heading 9027 or under Heading 9031.

Analysis: The analyzer mastersizer was accepted as laboratory measuring equipment used to determine particle size and generate analysis data. Its activity was held to involve physical or chemical analysis rather than a mere residual measuring function, and the contrary view of the lower authority was found inconsistent with the technical evidence on record.

Conclusion: The importer's cross objection succeeded, and the classification under the residual heading was set aside.

Final Conclusion: The dispute on tariff classification was resolved in part for each side, with Revenue's appeal failing on items 1 and 2 and the importer succeeding on item 4.

Ratio Decidendi: Classification under the Customs Tariff depends on the actual function of the imported goods, and where the evidence shows a specific tariff description squarely covers the goods, a residual heading cannot be applied.

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