Regin S104 Emitters — 5‑Pack single-use leak detection pellets, dense 3-minute cloud for ~1,200 cu ft

Regin S104 Emitters are single-use aerosol pellets that generate a dense, visible cloud for fast qualitative leak detection and airflow testing.

These compact pellets release a concentrated tracer cloud designed to reveal drafts, leaks and airflow paths in enclosed spaces. Each pack contains five individually sealed emitters; when activated one pellet disperses a viewable cloud over approximately 1,200 cubic feet for about three minutes. The S104 is intended for quick, visual troubleshooting where a clear, short-duration plume helps pinpoint problem areas without complex equipment.

How long does each Regin S104 emitter stay visible after activation?

Each S104 emitter produces a dense cloud that remains visibly detectable for roughly 180 seconds under typical indoor conditions. Visibility can vary with room size, ventilation and air movement, so expect shorter plume persistence in strongly ventilated spaces.

• Visible cloud duration: ~180 seconds (three minutes)
• Coverage per pellet: about 1,200 cubic feet
• Visibility affected by ventilation, temperature and air currents

What types of inspections can the S104 be used for?

The S104 is suited to qualitative leak detection and basic airflow mapping where a visible tracer is enough to locate sources or confirm movement. It’s commonly used around doors, windows, ductwork, fittings and pressurization checks to reveal paths that are otherwise hard to see.

• Smoke testing for building envelope leaks
• Airflow direction checks in HVAC ducts and vents
• Sealing validation around penetrations and frames

How do I store and handle the S104 emitters safely?

Store unused emitters sealed in a cool, dry environment to preserve performance; Regin specifies a two-year shelf life when properly stored. Handle activated pellets with care: allow the room to ventilate after use and follow any local disposal guidance for spent containers.

• Shelf life: 2 years if stored cool and dry
• Keep pellets sealed until ready to use
• Ventilate area after testing; follow disposal rules

How many pellets are in a pack and what does each deliver?

Each pack contains five individual S104 emitters, each engineered to produce one dense, viewable cloud. This makes the pack convenient for small jobs, multiple quick checks, or field kits where you might need several short-duration tests.

• Packs include: 5 emitters
• Per-emitter output: dense cloud for ~1200 cu ft
• Single-use pellets for one-time tests

Who this product is for: The Regin S104 Emitters are aimed at building inspectors, HVAC technicians, maintenance crews and facility managers who need a simple, portable tracer for visual leak and airflow checks. They are ideal when a rapid, qualitative indication is sufficient to locate leaks, verify airflow direction, or confirm seal repairs without bringing larger instrumentation. If you require precise quantitative measurements rather than a visible indication, pair the S104 with appropriate metering tools or choose specialized detection equipment.