Tariff classification of Zero Air turns on actual composition and use, with wrong declaration potentially supporting extended limitation.

Zero Air is analysed for tariff classification by reference to its actual gas composition, manufacturing process and customer use; where the product is suited for laboratory Gas Chromatograph testing and is not merely compressed air, the discussion supports classification under Chapter Heading 2804 rather than 2851. The note also explains that an incorrect tariff declaration may amount to suppression of facts when the declared heading does not match the product's true nature, and that such suppression can justify invocation of the extended period of limitation, particularly where the correct duty position is reflected only after departmental intervention.

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Issues: (i) Whether the product cleared as Zero Air was classifiable under Chapter Heading 2851 as compressed air or under Chapter Heading 2804 as Zero Air/Synthetic Air. (ii) Whether invocation of the extended period of limitation was justified.

Issue (i): Whether the product cleared as Zero Air was classifiable under Chapter Heading 2851 as compressed air or under Chapter Heading 2804 as Zero Air/Synthetic Air.

Analysis: The product was examined in the light of the manufacturing process and the statements of customers who used the product for Gas Chromatograph testing. Those statements indicated that the product supplied as Zero Air contained a gas composition suited for laboratory testing and could not be treated as compressed air. The unchallenged evidence also showed that the product was not used as a substitute for compressed air and that the earlier decision relied upon by the appellant was distinguishable on facts.

Conclusion: The product was held to be classifiable under Chapter Heading 2804 and not under Chapter Heading 2851, against the assessee.

Issue (ii): Whether invocation of the extended period of limitation was justified.

Analysis: The incorrect declaration of the product under Chapter Heading 2851 despite its actual nature was treated as suppression of facts. The record also showed that duty was paid under the correct classification only after departmental intervention, supporting the view that the extended period could be invoked.

Conclusion: Invocation of the extended period of limitation was upheld, against the assessee.

Final Conclusion: The appeal failed on both classification and limitation, and the demand and consequential order were sustained.

Ratio Decidendi: Where unchallenged customer evidence establishes that the cleared product is not the claimed commodity and the declaration of a wrong tariff heading is found to be suppression, the goods are to be classified according to their actual character and the extended period of limitation becomes invocable.

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