Specifications include, but are not limited to: Portable Fire Extinguishers: Inspect, test, maintain, repair and replace as needed, all Clackamas County fire extinguishers as required by NFPA current standard. Clackamas County has various sizes and types. Provide hydrostatic testing of pressurized water, dry chemical and carbon dioxide fire extinguishers; recharge exhausted extinguishers and conduct miscellaneous repairs as required; replace wall hook or vehicle brackets as needed. Contractor shall use manufacturer’s recommended recharge agent, lubricants, and replacement parts or materials specially listed for use in the fire extinguisher. Maintenance, servicing and recharging shall be performed by trained persons having available the appropriate servicing manuals and the proper tools.