Laboratory Testing Services


Routine Testing

An important aspect of fume hood and laboratory ventilation safety is the need to verify performance on a regular basis. To ensure that all lab systems remain in compliance with lab safety standards, routine testing should be conducted at least annually. These tests generally consist of the following:

  • Airflow Visualization
  • Face Velocity Measurement
  • Cross Draft Measurement
  • Response & Stability Test (for VAV Equipped Hoods)
  • Differential Pressure Measurement
  • Verification of Monitor Operation

Routine tests are also helpful at determining if the laboratory systems are functioning correctly. The result of improper equipment and system operation not only jeopardizes lab safety but can also lead to higher energy costs. Our technicians are trained to detect and troubleshoot system performance issues. They can offer immediate feedback regarding system performance including:

  • VAV Malfunction
  • Occupancy Mode Malfunction
  • Airflow Rates (Too High or Too Low)
  • Improper Lab Pressurization
  • Airflow Monitor & Alarm Malfunction
 

ANSI Z9.5/ASHRAE 110 Testing

The ANSI Z9.5 Standard covers a wide range of issues involved in laboratory ventilation. One of those issues is the method of testing an open fume hood's ability to contain. To determine the level of containment, the Z9.5 standard adopts the ASHRAE 110 performance test which specifies the minimum acceptable level of containment for a fume hood when a specific flow rate of a detectable gas is released into an operating hood. ECT ASHRAE 110 performance tests include:

  • Airflow Visualization
  • Face Velocity Measurement
  • Cross Draft Measurement
  • Tracer Gas Containment
  • Response, Stability & Sash Movement Effect (for VAV Equipped Hoods)
  • Perimeter Scan
  • Verification of Monitor Operation
Fume Hood Test Cart

ASHRAE 110 is important to you, the end user, for many reasons, but most of all it is important that your fume hood's performance be validated in it's "as used" environment. Although manufacturers are required to validate the performance of their hoods before they leave the factory, the environmental conditions after installation could be significantly different. Fume hood performance can be affected by several factors within the lab such as:

  • Supply Air Velocity & Direction
  • Space Temperature Fluctuations
  • Lab Pressurization
  • Improper Fume Hood Installation
  • Malfunctioning Ventilation System Components
 

In-House Test Lab
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MD 15128
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Specialty
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