Fume Hood Certification


We have a full time, Fume Hood Certification Specialists available to evaluate and certify your fume hoods.  It is recommended that all fume hoods have a minimum annual certification performed to insure proper function. 
A service call by our Fume Hood Specialist includes the following:
Identify the fume hood airflow requirements and ensures they operate in conjunction with the building HVAC system.

  • When purchasing a new fume hood, will help ensure you have the right hood for your application. 
  • Verifies proper installation of your fume hood.
  • Ensures proper fume containment, airflow and exhaust discharge.
  • Provides you with "ASHRAE 110-1995-All Test" results and certifies hoods  in compliance with established test criteria.
  • Chemical Fume Hood Test Methodologies.

    ASHRAE 110 - 1995: Method for Testing Performance of Laboratory Fume Hoods - this approach is the one quantitative measure of hood performance. This test is mandated by ANSI Z9.5 for all new hood installations. Recommendation: Mandated for every new hood. Recommended for every hood to gain a complete understanding of the hoods performance.

    LTMW 1105 SOP: This approach is comprehensive and provides a qualitative review of all factors that may impact hood performance. All procedures outlined in OSHA 1910.1450 as it relates to chemical fume hood testing, ANSI Z9.5 and ASHRAE 110 - 1995 (excepting tracer gas testing) are followed. A comprehensive report detailing hood performance vs. target performance, concerns and recommendations, original field checklists and equipment calibration certificates are provided. Recommendation: We recommend this method for annual chemical fume hood certification and preventative maintenance.

    FVS - Face Velocity and Smoke Testing: This is a simple test following the methods of the ASHRAE 110 - 1995 Method and ANSI Z9.5 - 1992 Version. Face Velocity is recorded with real time data logging - the original data tape is included with the report. Large volume smoke challenge and low volume smoke tests are conducted and the results recorded in the report. Recommendation: Semi-annual or quarterly checks between LTWM 1105 SOP annual certification.