Which of the following is NOT a component of the principal label?

The principal label of a pesticide product is a key element in communicating important information about the product to users and regulatory bodies. It typically includes vital details that contribute to the safe and effective use of the product. The correct answer here indicates that "Directions for use" is not a component of the principal label.

The principal label does contain the product name, which is essential for identification purposes. The net contents are also included to inform the user of the amount of product contained in the package. The registration number or PCP act number serves as an important regulatory identifier, showing that the product has been approved for use in Canada and complies with safety and efficacy standards.

In contrast, "Directions for use" are often found on supplementary labels or in accompanying documents rather than on the principal label itself. This distinction is important for ensuring that the user finds and understands how to use the product safely and effectively but may not always be included directly on the principal label. This helps to ensure that essential safety and usage information is easily accessible but may be formatted in manuals or guides that accompany the product, rather than being part of the primary label.