A Solo A5 smoke aerosol is designed for efficiency, with each can delivering approximately 250–300 detector tests, depending on usage conditions. Factors such as dispenser type, frequency of testing, and the size of the detectors being tested can affect this number. For most service engineers, one aerosol will last several site visits before needing replacement. Using genuine Solo aerosols ensures consistent activation, reduces waste, and prevents residue build-up inside detectors. For cost efficiency, many engineers keep a spare can on hand, especially when working across multiple sites. Fire Trade Supplies offers Solo A5 refills so you can stock up and avoid downtime during critical maintenance schedules.

Both the Solo 330 and Solo 332 are professional smoke dispensers used for testing smoke detectors, but there are key differences. The Solo 330 is the standard model, suitable for most common detectors, and is widely used across the industry. The Solo 332, on the other hand, has a larger cup design, making it better suited for detectors with wider or deeper housings. If you frequently test a variety of detectors, the 332 may provide better coverage and flexibility. Both models are compatible with Solo access poles and Solo A5 smoke aerosols, ensuring safe, efficient testing. Choosing between them depends on your typical detector installations – for most, the Solo 330 is sufficient, but the 332 is ideal for complex or oversized devices.

Yes. One of the benefits of investing in Solo test equipment is the availability of replacement parts. Engineers can purchase Solo telescopic poles, spare dispensers, heat tester components, and even carrying cases individually. This makes it easy to replace damaged or worn items without buying a completely new kit. Replacement parts are especially useful for contractors who need to maintain multiple sets of equipment across different teams. Fire Trade Supplies stocks genuine Solo accessories and spares, ensuring compatibility and long-term reliability. Whether you need to extend your reach with additional poles or replace a frequently used dispenser, you can keep your kit in peak condition with our full range of Solo replacement parts.

Yes. While Solo smoke testers are specifically designed for smoke detectors, the Solo range also includes heat testers such as the Solo 461 (battery-powered) and Solo 423 (mains-powered). These tools apply controlled bursts of heat to trigger heat-sensitive detectors. Engineers often choose a Solo fire alarm test kit that includes both smoke and heat testers for comprehensive coverage. This allows for complete system testing without the need for ladders or makeshift methods. Solo’s modular design means you can combine smoke and heat testing tools using the same access poles, making the process efficient and safe. If you work across mixed installations with both smoke and heat detectors, a combination Solo kit is the most practical option.

UK fire safety standard BS5839 requires smoke detectors to be tested at least once every 12 months, but many sites test more frequently, especially in high-risk environments such as care homes, hospitals, or commercial buildings. Using Solo smoke testers ensures that each device responds to real-world stimuli, proving the detector works correctly. Weekly or monthly “functional checks” may be carried out on selected devices, while a full system test should be completed annually. Solo test kits make this process faster and safer, helping engineers cover large buildings efficiently. By incorporating Solo testing into your planned maintenance schedule, you not only stay compliant but also provide peace of mind that detectors will respond when needed most.

Solo access poles are lightweight, telescopic, and designed for safe ladder-free testing. The Solo 100 telescopic pole extends up to 4.5 metres, while additional extension poles can be added to reach detectors as high as 9 metres. This makes Solo equipment suitable for testing in offices, warehouses, sports halls, and other buildings with high ceilings. Engineers benefit from reduced risk, as they can remain on the ground rather than working at height. The poles are manufactured from reinforced but lightweight materials, making them easy to transport and use on site. For most routine fire alarm testing, a combination of Solo telescopic and extension poles provides all the reach required without compromising safety.

Yes. BS5839-1 outlines the requirements for fire detection and alarm system maintenance in the UK, and using Solo test equipment supports compliance. The standard requires that detectors be tested using a method that introduces smoke, heat, or CO in a way that mimics real conditions. Solo testers achieve this without damaging detectors or leaving residue, ensuring accurate results. By using genuine Solo products, fire alarm engineers can demonstrate that detectors respond properly under test, fulfilling legal obligations and providing auditable evidence of maintenance. This approach not only meets compliance requirements but also builds trust with building owners and responsible persons, as it shows best-practice fire alarm testing is being followed.

DIY methods, such as using matches, aerosols not designed for detectors, or even pressing test buttons, are unsafe and unreliable. They can cause damage, fail to properly activate detectors, or give a false sense of security. Solo smoke testers are engineered specifically for fire alarm maintenance, delivering the right concentration of smoke safely and cleanly. This ensures detectors are tested under realistic conditions, without residue or health risks. Approved test equipment also demonstrates professionalism and compliance with BS5839 fire safety standards. For engineers and contractors, using Solo avoids costly call-backs, reduces liability, and enhances credibility with clients. In short, Solo testers protect both the detectors and the people who rely on them.

A Solo test kit typically includes:

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  A smoke dispenser (Solo 330/332) or heat tester (Solo 461/423)
  
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  One or more telescopic access poles (Solo 100/101)
  
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  Smoke aerosols or capsules (Solo A5, A10, or A10S)
  
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  Optional detector removal tools (Solo 200)
  
  Some kits combine smoke and heat testers, while others focus on one detector type. Choosing the right kit depends on whether you need smoke-only, heat-only, or combination testing capability. Fire Trade Supplies offers complete Solo kits and replacement parts to suit every requirement.

Yes. In addition to complete Solo test kits, Fire Trade Supplies stocks genuine Solo A5 smoke aerosols and other consumables. These are essential for ongoing detector testing, as each can provides several hundred tests. We also supply extension poles, spare dispensers, and accessories to keep your kit fully operational. Stocking up on consumables ensures you’re never caught short during scheduled maintenance. Using genuine Solo A5 aerosols guarantees consistent performance, avoids residue, and ensures compliance with fire safety standards. As an authorised supplier, Fire Trade Supplies offers fast delivery and competitive pricing, helping engineers and contractors keep their equipment ready for every job.

Both Solo and Testifire are professional detector testing solutions made by No Climb Detector Testers, but they serve different needs. Solo test kits provide smoke or heat testing using separate tools, making them simple, reliable, and cost-effective. Testifire units, on the other hand, combine smoke, heat, and CO testing in one multi-functional device, which can save time on larger sites. Engineers who mainly test smoke or heat detectors often prefer Solo kits for their lower cost and proven durability, while Testifire is ideal for multi-sensor environments.

If a detector does not respond during testing, there are several possible reasons:

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  The detector may be disabled or isolated at the fire panel.
  
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  The smoke chamber may be dirty or blocked.
  
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  The aerosol canister may be empty or improperly fitted.
  
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  The cup may not be sealed around the detector, allowing smoke to escape.
  
  Checking these issues usually resolves the problem. If the detector still fails to activate, it may be faulty and require replacement. Using genuine Solo A5 aerosols and ensuring correct technique minimises the risk of test failures.