GST exemption for wheat or meslin flour excludes pre packaged and labelled goods defined under Legal Metrology for retail packaging. GST exempts wheat or meslin flour until 21-09-2025, excluding goods that are pre-packaged and labelled, meaning commodities intended for retail sale, pre-packed as defined under the Legal Metrology regime and in packages or with labels required to bear statutory declarations, with a retail threshold of not more than 25 kg or 25 litre. Amendments and prior provisions addressed branded unit containers and procedural steps to forgo brand rights via affidavits and marking requirements.