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.