Portable Fog Generator System

The FlowMarker is a portable, lightweight fogger for a wide variety of flow visualization applications. The FlowMarker generates fog of ambient temperature. It does not serve as a heat source and does not cause air to rise, but its fog follows the natural undisturbed movements of air. The FlowMarker uses a proprietary fog fluid specifically developed for indoor flow visualization applications. Unlike traditional smoke sticks, the FlowMarker fog is nontoxic, germ-free, and does not promote growth of organisms. FlowMarker fog breaks down into carbon dioxide and water, leaving no trace. Choose from a single-point low-flow applicator for ventilation system validation, to multi-stream impedance shaping, or the extended accessory hose for wide-area movement, and even full-enclosure room ventilation and building envelope fogging. Certification, test & measurement companies use the FlowMarker II as their tool of choice for in-the-field work due to its portable nature, extended flow capability, long residence time.





  • Quickly visualize turbulence, directionality, and potential “dead” spots.

  • FDA-GRAS approved, on-depositing oil-less and smoke-free fog fluid

  • FM-Hydra Tube System© Accessory extends application range with a 5m hose nozzle

  • High opacity, visual latency, and even flow emission for precision-critical applications

  • Eliminates use of toxic smoke machines, dry ice and smoke sticks

  • Includes transport case with rechargeable battery and application tube

  • Product Accessories and Replacement Parts now available for purchase online!


Applications By Industry

  • information technology
    • Safe for electronics

    • PCB air impedance testing 

    • Server fan performance testing

    • Rack cabinet airway trending

    • Filter clog analysis

    it app 150x250
  • data center
    • Safe for electronics

    • Perforated floor tile airflow visualization

    • Overhead aisle flow analysis

    • Containment aisle flow validation

    • CRAC/CRAH unit performance testing

    data center app 150x250
  • hvac
    • Local exhaust vent testing (COSHH)

    • Air balancing (TABS)

    • Building envelope commissioning (NIBS)

    • HEPA filter testing

    • NEB certifier analysis
    hvac induct app 150x250
  • transportation
    • Interior cabin comfort optimization

    • Air balancing

    • Leak detection in ventilations systems

    • Airflow trending in engine compartments 

    transporation auto app 150x250
  • laboratory & research
    • Laminar & sash flow validation

    • HEPA filter testing
    • NSF/ANSI-49 compliance

    • Canopy & chemical fume hoods

    • Air exchangers for animal caging
    lab app 150x250


pdf button Flowmarker Data Sheet

pdf button Flowmarker Product Manual

pdf button Flowmarker MSDS


pdf button Hydra Accessory Information Sheet

pdf button Hydra Kit Quick-Start Guide

pdf button Hydra User Manual

pdf button Remote Control Accessory





Purchase Online