Strict construction of customs exemptions excludes separately imported QFT Tubes from the concessional duty available for ELISA kits.

Separately imported QFT Tubes do not qualify for the concessional basic customs duty available to ELISA kits under the cited customs notification. The concession applies to specified diagnostic kits or equipment, not to individual components. QFT Tubes, although intended for use with other ELISA-kit components, are blood-collection tubes containing antigens and do not constitute an ELISA kit in commercial or common parlance. Exemption entries require strict construction, and functional interdependence or end use cannot expand an entry unless the tariff provision expressly makes use or adaptation relevant. Eligibility is determined by the goods' condition at importation.

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Issues: Whether QFT Tubes, imported separately and used as a component of an ELISA kit, qualify for the 5% concessional basic customs duty available to ELISA kits under Serial No. 166(A) of Notification No. 50/2017-Customs.

Analysis: The notification extends the concession to specified diagnostic kits or equipment, including ELISA kits, but does not extend it to their individual components. QFT Tubes are blood-collection glass tubes containing antigens and are only one of several components required for an ELISA kit; they do not themselves constitute an ELISA kit in commercial or common parlance. Functional interdependence and intended use with an ELISA plate cannot enlarge the scope of an exemption entry. Exemption notifications require strict construction, and end use is not relevant to classification unless the tariff entry expressly makes use or adaptation a criterion. The relevant condition is that of the goods at importation.

Conclusion: QFT Tubes imported separately are not eligible for the concessional duty exemption prescribed for ELISA kits; the issue is decided against the assessee.

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