A closure that feels difficult to open is not enough to establish child resistance. When a project requires that performance, the exact packaging system and its supporting test documentation matter.
- Ask which package configuration was evaluated, including the closure, material, and dimensions.
- Confirm whether changes to the design affect the applicability of that documentation.
- Review opening instructions and the intended user's ability to use the pack; do not describe packaging as child-proof.
Reference: CPSC guidance on poison prevention packaging.