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Cleanroom Testing and Validation Instruments
Smoke Pencil
A pocket-size smoke pencil producing a narrow, low-velocity tracer stream for quick qualitative checks of drafts, leakage paths and localized airflow.
- Pencil-thin low-velocity tracer.
- Reusable capped metal holder.
- Precise localized airflow checks.
Product Introduction
The reusable pen-style holder accepts a replaceable smoke wick and protects the remaining insert under a close-fitting extinguishing cap. Its pencil-thin plume is suited to door gaps, fume hood faces, grilles and small enclosure openings where broad fog output would mask the exact flow direction. The slim anodized body and pocket clip keep the tool accessible during inspection rounds.
Key Features
Low initial plume velocity limits disturbance of the observed path.
Replaceable wick inserts allow repeated short checks.
Protective cap extinguishes and stores the remaining insert.
Slim metal holder is easy to position beside gaps and grilles.
Pocket clip and compact case support field inspection work.
Customer Product Concerns
Small drafts and leakage paths require a tracer source that can be placed close to the opening without flooding the area or pushing the air being observed.
A large fog source can hide the direction of a very small draft.The exposed wick produces a thin tracer line close to the test point.
Tracer discharge momentum can influence weak local airflow.The smoke rises from the wick with minimal initial projection.
Single-use smoke sources create unnecessary waste during short checks.The cap extinguishes the insert so the unused portion can be retained for later tests.
Small inspection tools are easily misplaced between rooms.A metal pocket clip and compact protective case keep the holder and spare inserts together.
Typical Applications
Door-gap airflow checksFume hood face visualizationClean bench and cabinet observationsVentilation grille direction checksLocalized leak-path tracing
Technical Parameters
Representative smoke-pencil construction is listed below; holder finish, insert supply and carrying accessories can be selected for the inspection program.
| Core Material | Anodized aluminum holder, stainless insert retainer and replaceable smoke-emitting wick |
|---|---|
| Panel Thickness | Typically 0.8-1.5 mm for tubular holder wall |
| Effective Width | Approximately 12-20 mm holder diameter |
| Maximum Length | Approximately 140-190 mm with protective cap fitted |
| Steel Facing Thickness | Typically 0.3-0.8 mm for stainless retainer components |
| Core Density | Approximately 2700 kg/m³ for the aluminum holder |
| Thermal Conductivity | Approximately 150-210 W/(m·K) for the aluminum holder alloy |
| Surface Finish | Satin blue anodized holder with stainless clip, black grip ring and silver protective cap |
| Joint Type | Threaded or sliding wick retainer with close-fitting extinguishing cap |
| Customization | Available based on the intended application and operating environment. |
Available Options
Spare smoke-wick packsAlternative anodized holder colorsProtective storage tubePocket carrying caseMagnetic holder clipReplacement extinguishing cap
Planning a Smoke Pencil specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
