E-FireX 5 Gal TRPL-E Encapsulator Agent Recharge

The E-FireX EFX5P is a 5-gallon (19-liter) bulk container of TRPL-E encapsulator agent — the same patented all-natural mineral-based formula used in all E-FireX portable fire extinguishers. This recharge container is designed for service technicians and facilities that need to recharge E-FireX extinguisher units after discharge, and for operations using TRPL-E in fire engine foam tanks, fixed suppression systems, or high-volume response equipment.

TRPL-E is a water-based encapsulator agent that works by rapidly cooling lithium battery cells while simultaneously forming a mineral encapsulation barrier around the fire source. This barrier traps flammable vapors and toxic off-gassing, prevents oxygen from reaching the combustion zone, and dramatically reduces the risk of re-ignition — the most dangerous characteristic of lithium battery thermal runaway events. The agent is 100% all-natural, biodegradable, fluorine-free, and contains no PFAS, PFOS, or PFOA chemicals. It proportions readily for use with a wide range of foam and suppression equipment, and its performance characteristics make it a practical replacement for AFFF in applications where PFAS-free compliance is required.

The 5-gallon container provides enough agent to recharge multiple E-FireX portable units or stock a service vehicle for field recharging operations. It is tested and certified by UL Solutions (certification number EX29100) and recognized under NFPA 18A wetting agent guidelines.

Important Note on Classification: Underwriter Laboratories has not established specific test criteria for lithium-ion battery fire protection, and NFPA does not currently recognize a standalone fire hazard classification specifically for lithium-ion battery fires. Lithium-ion battery fires are addressed within existing fire classifications depending on the materials involved, with suppression strategies typically emphasizing sustained cooling consistent with Class A fire response principles. E-FireX is actively working with NFPA on draft language for a new "L" classification for lithium battery fires.

TRPL-E is a mineral-based suspended encapsulator agent, not a chemical foam concentrate. Its suppression mechanism is different from both dry chemical agents and conventional AFFF foam, and understanding the difference is important for correct application.

• Rapid Cell Cooling: The water content in TRPL-E absorbs heat from burning lithium cells on contact, reducing surface temperatures faster than water alone due to the encapsulator chemistry's heat exchange properties. Lithium battery fires can reach temperatures exceeding 2,500°F during thermal runaway — sustained cooling is the only way to stop the internal electrochemical reaction driving the fire.
• Physical Encapsulation: The mineral solids in the formula settle around the fire source and form a barrier that contains toxic off-gassing, cuts off external oxygen supply, and physically isolates the thermal event from spreading to adjacent cells.
• Stable Foam Blanket: TRPL-E forms a stable blanket covering fuel surfaces, functioning similarly to AFFF in applications where vapor control over a flammable liquid surface is needed, without the PFAS chemistry that makes AFFF environmentally problematic.
• No Toxic Runoff: The agent is biodegradable and safe to handle after the fire is extinguished. It does not produce the contaminated water runoff associated with AFFF application on lithium fires.
• Multi-Class Effective: Certified for Class A (ordinary combustibles), Class B (flammable liquids), Class C (electrical — non-conductive and non-abrasive), and Class D (lithium and other combustible metals).

The EFX5P bulk container is suited for the following applications:

• E-FireX Extinguisher Recharge: The primary use case. After any E-FireX portable unit is discharged, it must be refilled with fresh TRPL-E agent by a certified technician. The 5-gallon container provides enough agent to recharge multiple 9-liter (EFX9L) or smaller E-FireX units in a single service call.
• Fire Engine Foam Tanks: TRPL-E proportions for use in fire apparatus foam systems, providing first responders with a PFAS-free agent capable of handling EV fires and mixed-hazard incidents.
• Fixed Suppression Systems: For facilities with fixed TRPL-E-based suppression systems covering battery storage rooms, EV charging areas, or other lithium-hazard zones.
• High-Volume Response Staging: Emergency response teams and industrial facilities can stage bulk TRPL-E supply for rapid deployment during large-scale lithium battery incidents.
• EV Service and Battery Storage Facilities: Operations requiring ongoing recharge capability for their E-FireX portable unit inventory.

TRPL-E recharge of E-FireX extinguishers must be performed by a certified fire extinguisher service technician per NFPA 10. Do not attempt to recharge E-FireX units without proper training and equipment. Key handling guidelines:

• Use Only TRPL-E for E-FireX Units: E-FireX extinguishers are designed and listed specifically for TRPL-E agent. Do not substitute water, AFFF, or any other agent — substitution will void the unit's UL listing and may affect performance.
• Proportioning: TRPL-E proportions readily with foam proportioning equipment for use in apparatus tanks and fixed systems. Refer to the E-FireX product data sheet for proportioning ratios specific to your equipment.
• Storage: Store in a cool, dry location away from freezing temperatures. The agent is water-based and should not be allowed to freeze. Inspect the container for leaks or damage before use.
• Shelf Life: Follow the shelf life guidelines in the E-FireX product data sheet. Degraded agent should not be used to recharge extinguishers that will be put into service.
• Safety: TRPL-E is non-toxic and biodegradable. Standard handling precautions apply — avoid ingestion and eye contact. Review the Safety Data Sheet before use.

How many E-FireX extinguishers will one 5-gallon container recharge?

The 9-liter EFX9L unit holds 2.5 gallons of agent. One 5-gallon container provides enough TRPL-E to fully recharge two EFX9L units. Smaller E-FireX units (1L, 2L, 6L) require proportionally less agent per recharge. A service technician can calculate exact yields based on the specific unit sizes in their inventory.

Can TRPL-E be mixed with water or other agents to extend volume?

No. TRPL-E should be used at full strength for extinguisher recharging. Diluting the agent will reduce its encapsulation performance and may affect the unit's listed fire suppression capability. For apparatus tank and fixed system applications, follow the specific proportioning guidelines in the E-FireX product data sheet.

Is this the same agent used in E-FireX fire extinguishers from the factory?

Yes. TRPL-E is the same patented formula used in all E-FireX portable extinguishers. The EFX5P bulk container is the standard recharge supply for E-FireX service operations.

Can TRPL-E replace AFFF in our existing suppression systems?

TRPL-E proportions for use in many foam system configurations and provides a PFAS-free alternative to AFFF. However, system compatibility depends on your specific equipment, proportioning ratios, and the hazard being protected. Consult with your fire protection engineer and authorized E-FireX distributor before converting an existing AFFF system to TRPL-E.