What does a yellow tag on a fire extinguisher indicate?

A yellow tag on a fire extinguisher serves as an indicator of compliance with UL 300, which pertains to the safety and performance of fire extinguishers designed for use in commercial kitchen environments. This compliance ensures that the extinguisher is suitable for extinguishing flammable cooking oils and greases, known as Class K fires. The UL 300 standard includes rigorous testing to establish that the extinguisher will perform effectively in a kitchen setting where these types of fires may occur.

In addition, other tags typically have different meanings. For example, extinguishers that require recharging would not display a yellow tag, and instead might show a red or different colored tagging to indicate maintenance needs. Similarly, an extinguisher impacted by environmental conditions or deemed out of service would also utilize different tagging conventions to communicate those specific issues. Thus, the yellow tag specifically highlights adherence to the UL 300 standard, affirming the extinguisher’s readiness for use in environments at risk for certain kitchen-related fire hazards.