Final answer:
OSHA is responsible for the codes on PPE, which ensure the gear meets safety standards.
Step-by-step explanation:
The organization responsible for the code numbers stamped onto Personal Protective Equipment (PPE) is the Occupational Safety and Health Administration (OSHA). OSHA is the federal agency that ensures the safety and health of America's workers by setting and enforcing standards. The agency is responsible for making sure that employers provide workers with safe and healthful conditions, and by implementing regulations, OSHA ensures that PPE meets specific safety standards. This entails providing a code that helps track and certify that the gear meets the prescribed standards necessary for safety in the workplace.