Which of the following scenarios requires weigh master certification?

In the context of weight verification and licensing, a weigh master is responsible for overseeing and certifying the accuracy of weights in commercial transactions. This certification is crucial in situations where there is a formal exchange of goods and services that could have financial implications.

A commercial transaction with formal receipts is characterized by established buyer-seller relationships where the weight of the goods directly affects pricing, inventory, and legal documentation. In such cases, having an accredited weigh master ensures that the weights are accurate and comply with regulatory standards, thereby instilling trust and reducing the risk of disputes.

In contrast, scenarios like charity sales or informal exchanges do not typically have the same regulatory requirements since they often operate on a goodwill basis without formal financial transactions. Weighing that occurs for free by individuals does not necessitate certification, as these situations lack the formal structure and legal implications that would demand an official verification of weights.