Commercial classification of medical oxygen and nitrous oxide places them under medicines, not the general gases entry.

Medical oxygen and nitrous oxide are classified according to their commercial and functional identity, so goods used in hospital care and as anaesthetic agents may fall within the medicines entry rather than the general gases entry in the Kerala General Sales Tax Schedule. The special medicines entry prevails over the general gases entry where both could apply, and classification must follow popular and user-based understanding rather than scientific description. A concessional notification tied to the earlier version of the gases entry did not control classification after the statutory entry was amended and substituted.

---

---

Issues: Whether medical oxygen and nitrous oxide are taxable under the entry relating to gases or under the entry relating to medicines in the First Schedule to the Kerala General Sales Tax Act, 1963, and whether the earlier notification continuing a concessional rate could govern the post-amendment entry.

Analysis: Classification of goods under the sales tax schedule must be made according to their popular or commercial understanding, not their scientific description. Where a commodity is identified by its use in trade and by the class of persons who deal with or use it, the common parlance, user, and functional tests become relevant. Medical oxygen is manufactured for hospital use and is administered to patients, while nitrous oxide is used as an anaesthetic agent. Both therefore answer the description of medicines in commercial understanding. Entry 85 is a general entry for gases and, by its own wording, excludes goods specifically falling elsewhere in the Schedule. Once the items are held to fall under the special entry for medicines, they are excluded from the general gas entry. Government notifications issued in the context of the earlier version of entry 85 could not control the statutory classification after the entry was substituted.

Conclusion: Medical oxygen and nitrous oxide fall under the entry for medicines and not under the entry for gases. The concessional notification linked to the earlier gas entry did not govern their classification after the amendment.

Final Conclusion: The revision succeeded and the assessment was required to be modified by classifying both commodities under the medicines entry at the applicable rate.

Ratio Decidendi: Where a commodity is commercially and functionally understood as a medicine, a specific medicines entry prevails over a general gases entry, and statutory classification must follow that special entry notwithstanding executive notifications to the contrary.

---