General Application Purair Basic Ductless Fume Hoods / Fume Cabinets

Filtration Technology System

Multiplex™ Filtration consists of a pre-filter and main to create a combination of chemical and physical architecture customised to each application. The mechanical design enhances safety, convenience and overall value.

• The electrostatic prefilter is accessible from within the cabinet.
• A patented filter clamping mechanism allows for the filter to be easily installed and ensures an even seal at the filter peripheral face at all times to prevent bypass leakage.
• The filter chamber prevents contaminated air from contacting internal cabinet mechanisms.
• The main filter number and installation date are displayed in a front-access window.
• This carbon filtration technique is based on enhanced, activated carbon particle formulations from specially selected, naturally occurring raw material superior to wood or other organic sources. The carbon is treated to attain the proper porosity and aggregate surface area and to react with several ranges of aerosolised chemicals moved through the filter by an air-handling blower.
• The multiplex option permits one or more filtration options to be combined to meet a wider range of multiple-use applications. Multiplexing permits configuration for the capture of acids, bases and particulates such as biological aerosols when paired with
• HEPA or ULPA filters.
• The carbon filter is a self-contained assembly sized to fit the specified product model number, and configured to optimise airflow across 100% of the filter surface area for maximum efficiency, prolonged filter life, optimal diffusion and saturation capacity, and user safety.

The Purair Performance Advantage

• Professional Quality. Purair fume cabinets comply with current technical and safety regulations.
• Multiplex Filtration. The Multiplex™ Filter offers a range of options for high performance.
• Industrial Components. The cabinet frame and work surfaces are durable and chemically resistant.
• Reliability. Internal systems are isolated from fumes, extending product life.

Purair Airflow Pattern

Diagram. The Purair Basic Series ductless fume cabinet maintains a constant face velocity of >0.50 m/s in compliance with Australian and international standards for safety and performance. Contaminated air is pulled through the Multiplex filtration system where activated carbon adsorbs chemical vapours and/or particulates if HEPA/ULPA filters are used. Clean air is returned to the room.

A. The main filter is easy to replace, no tools required. The filter clamps tightly against the filter gasket to prevent filter tears and maintain filter integrity.

Multiplex™ Filtration System, Summary

	Pre Filter	Main Filter
Electrostatic	Protects the main filters from aerosols, mists, dust and particulates with filter efficiency superior to 95.5% down to 0.5 microns.
	Standard	--
Activated Carbon	FILTCO™ Sourced. A single carbon filter containing activated carbon granules chemically formulated to capture one or more specific vapours or family of vapours.
Single: One type of activated carbon.	--	Specify
Stacked: Two or more single filters each with a different type of carbon.	--	Specify
HEPA/ULPA	A self-contained filter designed to physically capture particles larger than 0.3 microns (HEPA) or 0.12 microns (ULPA). When used with a HEPA/ULPA filter the ductless fume hood may be applied as a Class I Biological Safety Cabinet.

PURAIR Basic Ductless Fume Hoods / Fume Hoods - Bio-Cabinets Australia