Are ductless fume hoods good?

Ductless fume hoods are ideal for labs that require mobility, handle light to moderate chemical loads and are looking for a cost-effective option from both an installation and operational perspective.

What is a ductless fume hood used for?

Ductless fume hoods, sometimes called carbon-filtered enclosures or filtered fume hoods, are self-contained, filtered laboratory enclosures that remove hazardous fumes, vapors and particles from the laboratory. Unlike traditional fume hoods, installation costs are very low and no ductwork is required.

How much is a ductless fume hood?

Benchtop Ductless Fume Hoods

Filters Description Price
A11-FI-H12 HEPA Filter 99.97% @ .3µm Particles $275
A11-FI-U12 ULPA Filter 99.99% @ .12µm Particles $550
A11-FI-C12 Activated Charcoal Carbon Filter for General Purpose $295
A11-FI-C12* Activated Carbon Filter for Acid Gasses $395

Do fume hoods have filters?

A chemical fume hood protects the user while a biosafety cabinet protects the user, the environment, and the material. Biosafety cabinets have high-efficiency particulate air (HEPA) filters while chemical fume hoods do not.

Where do fume hoods vent to?

A fume hood is a ventilated enclosure in which gases, vapors and fumes are contained. An exhaust fan situated on the top of the laboratory building pulls air and airborne contaminants through connected ductwork and exhausts them to the atmosphere.

How many types of fume hoods are there?

A fume hood is typically a large piece of equipment enclosing five sides of a work area, the bottom of which is most commonly located at a standing work height. Two main types exist, ducted and recirculating (ductless).

How often do fume hoods need to be inspected?

For fume hoods, they are primarily concerned with airflow at the face of the hood, monitoring, maintenance, and exhaust. OSHA indicates that the quality and quantity of ventilation should be inspected at installation, then regularly monitored at least every three months.

Are fume hoods sterile?

Chemical fume hoodsprovide protection to the worker and laboratory environment but do not provide a sterile workspace to protect samples from contamination.

When should a fume hood be used?

Fume hoods should be used when working with toxic compounds or compounds with a boiling point below 120°C. Fume hoods, or other effective local ventilation, must be provided and used when the materials used will exceed exposure limits in the laboratory.

How do I know if my fume hood is working?


  1. Turn on hood.
  2. Check the vaneometer.
  3. Match red arrow on sash with red arrow on the side panel of the hood.
  4. To acquire reading hold vaneometer in the center of the hood.
  5. Acceptable standard -Chemical fume hoods should operate at a face velocity of (80-120) Linear Feet Per Minute.

What is the function of a fume hood How do you know if your fume hood is working properly?

Ensure the exhaust is operating properly. A fume hood’s main job is to exhaust hazardous vapors and fumes out of the area. Check the baffles to make sure they are not obstructed. If the fume hood has an airflow monitor, check the monitor’s status to ensure proper functioning.

Where to find purair basic ductless fume hoods?

Purair Basic ductless fume hoods are found in research laboratories, educational facilities, and forensic laboratories throughout the world and are designed to protect the user and the environment from hazardous vapors generated on the work surface.

Which is the best ductless fume hood for packaging?

The Purair® SafeSEARCH ductless fume hoods are a series of high efficiency workstations designed to increase protection from drugs, chemical vapors and particulates during the packaging examination process.

Which is the best ductless air conditioner Hood?

The Purair ECO Series high efficiency ductless fume hoods protect the user and the environment from hazardous vapors generated on the work surface.

Where are the pass through ports on a purair Hood?

H. Pass Through Ports: Electrical cords and cables are safely routed into the cabinet through ports on the back. I. Electrostatic Pre-Filter: The electrostatic pre-filter is accessible from inside the chamber and 91% effective down to 1-3 microns.