Fume Hoods for Clinical and Medical Laboratories
Clinical labs use fume hoods to protect technologists from chemical vapors, fumes, and aerosols during specimen processing, reagent preparation, histology procedures, and chemical handling. The right fume hood depends on the chemicals involved, the volume of work, and the lab’s ventilation system.
Types of Fume Hoods for Healthcare Labs
Benchtop Fume Hoods
Sit on an existing bench or casework counter. Available in 3-foot to 8-foot widths. Best for labs with limited space or lower chemical usage volumes.
Floor-Mounted Fume Hoods
Standalone units that include the base cabinet. Better for high-volume chemical handling, histology grossing, and procedures that require a dedicated station.
Constant Air Volume (CAV)
Maintain a fixed exhaust rate regardless of sash position. Simpler to install and maintain. Higher energy cost because the fan runs at full speed even with the sash closed.
Variable Air Volume (VAV)
Adjust exhaust rate based on sash opening. More energy efficient and better for labs with multiple hoods. Requires a compatible building automation system.
Common Healthcare Applications
- Histology and pathology — formalin fixation, tissue processing, xylene handling, slide staining
- Clinical chemistry — reagent preparation, acid dilution, solvent handling
- Cytology — specimen preparation with chemical fixatives
- Pharmacy compounding — hazardous drug preparation in negative-pressure environments
- Research labs — general chemical handling in healthcare-affiliated research facilities
Sizing and Selection
The most common sizes for clinical labs are 4-foot and 6-foot hoods. Key factors in selection:
- Volume and type of chemicals used
- Number of people sharing the hood
- Required face velocity (typically 80-100 fpm for lab hoods)
- Available ductwork capacity
- Sash configuration (vertical, horizontal, or combination)
Request a Quote
We will help you select the right fume hood for your clinical application and coordinate with your HVAC contractor on ductwork requirements.
Call (801) 953-4444 or email sales@labs-usa.com.
Frequently Asked Questions
What size fume hood do I need for my lab?
The right fume hood size depends on your lab layout, the types of chemicals you work with, and the number of users. Standard widths range from 4 to 8 feet. Labs USA offers free design consultations to help you choose the right size for your space and workflow.
How often should a fume hood be tested and certified?
Fume hoods should be tested and certified at least once per year, following ANSI/ASHRAE 110 standards. Many facilities also require a face velocity test every 6 months. Labs USA can help you schedule testing and ensure your hoods meet compliance requirements.
What is the difference between ducted and ductless fume hoods?
Ducted fume hoods exhaust air outside the building through ductwork, making them suitable for most chemical applications. Ductless hoods use carbon filters to recirculate air and work best for low-toxicity applications. Contact Labs USA for help selecting the right type for your lab.
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