UV detector classification turns on essential character, with the item treated as principal scientific equipment rather than a spare.

An imported dual beam variable wavelength UV detector for liquid chromatography was classified as complete scientific equipment under Tariff Item 90.25, not as a spare under Tariff Item 90.29(1). Technical material showed the detector was the principal equipment in the chromatography system, while the pump, injector and analyser column were supporting accessories. The literature also indicated that the item had spectrophotometer capabilities and more appropriately retained its own technical identity rather than being treated as a spare part. The classification therefore followed the item's essential character and function.

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Issues: Whether the imported UV detector for liquid chromatography was classifiable as a complete equipment under Tariff Item 90.25 or as a spare under Tariff Item 90.29(1).

Analysis: The imported item was described as a dual beam variable wavelength UV detector for liquid chromatography with autocontrol accessory. The technical material on record showed that the appellants had a liquid chromatography system in which the UV detector was the major equipment, while the pump, injector and analyser column were only supporting accessories. The literature also indicated that the detector had spectrophotometer capabilities and was more appropriately treated as a spectrophotometer rather than as a spare part.

Conclusion: The imported UV detector was classifiable under Tariff Item 90.25 and not as a spare under Tariff Item 90.29(1).

Final Conclusion: The appeal succeeded and the classification adopted by the lower authority was set aside.

Ratio Decidendi: Where the imported item functions as the principal scientific equipment and not as a spare of another identifiable machine, it is to be classified according to its own essential character and technical identity.

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