HWS Series Horizontal Laminar Flow Cabinets

    Provide a high degree of protection
    Demanded by medical, pharmaceutical and scientific fields.
    Do not protect personnel from aerosols of hazardous materials that may be handled in the cabinet


HWS (Horizontal-flow) Laminar Flow Series cabinets are designed to provide  a high degree of protection for process products and apparatus in laboratory and production facilities. Many critical applications in the medical, pharmaceutical, scientific and electronics fields demand an ultra-clean work environment that is free from biological and particulate contamination.

Typical applications include:

  •  Aseptic dispensing,
  • Assembly of electronics and optics components,
  • Cell culturing,
  • Media pouring,
  • Preparation of medical devices and
  • Sterility testing.

HWS Series Laminar Flow cabinets are intended for work with non-hazardous materials in such applications.


Air is passed through the work zone in a smooth, horizontal direction, the blower fan and mounting position are designed to maximize airflow. The deeper rear plenum ensures unobstructed airflow to the HEPA filter face. As a result, the cabinet is quieter with reduced vibration and longer service life for the HEPA filter.



The housing is constructed of locally sourced steel and consists of a high quality powder coated finish to provide a suitably solvent, alkali and acid resistant laboratory grade coating. The work area is fully constructed from stainless steel, with inward folds to avoid sharp edges. A removable, washable metal screen protects the HEPA filter from mechanical damage.


A direct-drive fan is regulated by a speed controller to enable airflow to be maintained through filter life. Fans and filter plenums are designed to provide quiet operation and low vibration level.


Clyde-Apac® Microseal™ HEPA filters, are manufactured to AS 4260. Each filter is individually tested to be leak-free in accordance with AS 1807.6. A manufacturer endorsed test label fitted with an extract of the test report is affixed to each filter. A prefilter extends the life of the exhaust HEPA filter and protects it from the mechanical damage during cleaning of the work zone.


An easily-accessed, washable pre-filter arrests not less than 90% of particles 5 micron and larger, thus prolonging HEPA filter life. A warning light in the control panel signals the need for pre-filter service.


A low voltage touch control panel is located on the front of the cabinet. Glare-free lamps provide a minimum lighting intensity of min 650 lux at the work floor.


HWS cabinets provide protection for products or experiments, but do not protect personnel from aerosols of hazardous materials that may be handled in the cabinet. For applications where personnel and environmental protection is required, Clyde- Apac Class I or Class II biological safety cabinets, or cytotoxic drug safety cabinets (as applicable) should be considered.

Standard Features

  • Stainless steel work zone
  • Low voltage touch controls
  • Pre-filter service
  • Glare-free fluorescent lighting
  • Comprehensive operation manual
  • Germicidal UV lamp
  • UV shield/ work zone cover
  • Power outlet

Available Options

  • Hourmeter
  • Manometer
  • Service taps for air, gas and vacuum
  • Extra quiet operation
  • Floor stand (fixed height)
  • Floor stand (electric height – adjustable)