What information must be attached to the extinguisher after passing the conductivity test?

The answer is supported by the requirement that after an extinguisher passes its conductivity test, it must display the date of the test and the initials of the technician who performed it. This practice is crucial for maintaining accurate records of maintenance and ensuring compliance with safety regulations. By documenting the date and the technician's credentials, it provides traceability and accountability in the inspection and maintenance process of fire extinguishers. This step confirms that the extinguisher is safe and functional for use, promoting readiness in emergency situations.

In contrast, while inspection history, manufacturer's details, and emergency contact information are all valuable components of an overall safety program, they are not specifically mandated to be attached following the conductivity test. Their relevance lies more in general information and record-keeping, rather than being a direct requirement linked to the conductivity test itself.