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Airflow Visualization Techniques
Airflow visualization techniques like making the ambient pattern of air visible for testing and analysis can be done with a fog generator or smoke wand like the °C Breeze and FlowMarker. HVAC technicians use this airflow visualization technique to detect leaks in ducts, monitor turbulence in ventilation systems and test HEPA filters. Laboratory and pharmacy managers employ similar methodologies to test airflow in biosafety cabinets and chemical fume hoods — making sure that they comply with USP 800 and ensure the safety of their workers.
These Degree Controls products emit thermally-neutral fog rather than smoke. The smoke-free fog is FDA-GRAS approved and non-depositing oil-less. °C Breeze has a variety of optional nozzle attachments as follows:
- MiniFlow Nozzle (for finer fog stream and throttling effect)
- PlanarFlow Nozzle (longer nozzle with perforations for planar flow visualization
- FlowBulb Nozzle (media filter for enhanced flow visualization in low velocity applications)




What are Airflow Visualization Techniques?
Generally referring to Smoke Wand Testing, airflow visualization techniques are used to validate the performance of critical containment equipment like biosafety cabinets. The goal is to maintain aseptic conditions when manufacturing sterile products under aseptic conditions. The visualization of critical airflow using a smoke wand or fog generator will hopefully show unidirectional airflow that sweeps over and away from the product.
