Laminar Flow Clean Bench Hood

Purair LF Series Laminar Flow Cabinets

The Purair Laminar Flow cabinet series from Air Science delivers reliable particulate protection for samples and work processes across numerous applications. Available in both horizontal and vertical flow configurations, these cabinets provide a sterile work zone for aseptic techniques while maintaining air cleanliness that meets and exceeds ISO Class 4 standards.

Key Features

• Provides sterile work zone for aseptic techniques
• Air cleanliness meets and exceeds ISO Class 4
• All models use ULPA filters (99.999% efficient at particle sizes between 0.1 to 0.3 μm)
• Available in horizontal or vertical flow configurations
• All models equipped with a stainless steel work surface
• Air Science Multiplex ULPA Filtration technology creates a clean work environment
• Energy efficient external rotor blower design reduces operating costs with low noise and vibration levels
• Ergonomically angled front improves reach and comfort
• Side windows allow ambient light into the chamber and provide three points of visibility for an unobstructed view of contents (not available on stainless steel models)

Applications

Purair Laminar Flow cabinets are suitable for applications that generate no biohazardous materials and do not require operator protection.

• Mycology and Food Microbiology
• Plant and Mammalian Cell Culture
• Clinical Pharmacy and Hospitals
• Cleanrooms
• Semiconductor Assembly
• Pharmaceutical
• Aerospace
• Medical Device Assembly
• Research Laboratories

USP 797 Sterile Compounding Compliance

When used according to best practices, the Purair LF Series cabinet encourages compliance with criteria set forth by USP 797 for sterile preparation in pharmaceutical compounding of nonhazardous agents. These include injectables, IV admixtures, pastes and ointments and irrigating solutions which are protected by filtered air blown over the work surface in a laminar flow.

Component Details

Control Panel

The control panel includes On/Off switch for fan, lighting, GFCI outlets, Minihelic ULPA pressure gauge to measure filter condition, UV lamp key switch.

Filtration System

Long-life Camfil Farr ULPA main filter with efficiency of 99.999% at particle sizes between 0.1 to 0.3 μm. Disposable polyester fiber pre-filter with 85% arrestance. Spring loaded, adjustable tension clamping adjusts for gasket aging. The main filter gasket evenly seals the filter face to prevent bypass air leakage. The pour-in-place silicone gasket outperforms traditional style stick-on "dove-tail" gasketing.

Blower Motor

External rotor blower, permanently lubricated, with low noise and vibration levels.

Lighting

Compact LED cabinet lamp located away from laminar flow area.

UV Lamp (Optional)

Optional ultraviolet (UV) lamp to create light emission conditions known to safely sterilize and decontaminate work zone and cabinet contents between operating periods.

Work Surface

Stainless steel work surface with no spill retention.

Power Supply

GFCI outlet to power equipment in cabinet, 5A maximum.

Airflow Technology

Purair Laminar Flow cabinets maintain a 0.35-0.45 m/s (80-100 fpm) airflow velocity measured 6"/150 mm from the filter. This face velocity is in compliance with USA and international standards for safety and performance. The ULPA filters are easy to replace with common tools.

Vertical Airflow

• The airflow on the Purair LF Series vertical flow cabinets directly strikes the work surface
• Vertical laminar flow cabinets are manufactured with rear wall perforations that remove a small amount of air at the rear of the cabinet to reduce turbulence
• In vertical flow cabinets, the ULPA filter is mounted above the work surface which provides a taller and deeper work space, allowing for larger equipment in the work zone without interrupted airflow
• Vertical flow cabinets are more easily customized to specific applications

Horizontal Airflow

• In horizontal flow cabinets the airflow does not directly impinge on the work surface but rather is smoothly drawn across it, creating less turbulence
• Airflow in a horizontal flow cabinet exits directly towards the user
• Large or tall equipment in a horizontal flow cabinet can interrupt airflow more than in a vertical flow cabinet

Construction and Design

Choose from standard powder coated interior with stainless steel work surface and side windows or optional stainless steel interior (-SS model). White epoxy coated steel frame exterior. Tempered glass transparent windows (not available on SS models). Available in 120V, 60Hz and 230V, 50Hz models. The cabinet frame and work surfaces are durable and chemically resistant for long service life. All cabinet components are cleanroom compatible.

Products are designed for desktop use or installation on the optional mobile base stand. The rear wall of vertical flow cabinets is perforated to reduce work surface turbulence by removing some of the airflow to the rear.

Quality and Reliability

Each cabinet is factory tested for safety and performance in accordance with international standards. Purair Laminar Flow cabinets are shipped fully assembled. No installation is required; just plug them in and use them.

Available Models

Purair Laminar Flow cabinets are available in 6 different widths: 24", 36", 48", 60", 72", and 96". Models include Vertical Laminar Flow (VLF), Horizontal Laminar Flow (HLF), and Horizontal Laminar Flow with Extra Tall option (HLF-XT).

Vertical Laminar Flow Cabinet Dimensions and Weights

Note: Internal Height measured from the bottom of the head unit to the top of the worksurface.

Horizontal Laminar Flow Cabinet Dimensions and Weights

Note: Internal Height measured from the bottom of the head unit to the top of the worksurface.

Horizontal Laminar Flow Cabinet with Extra Tall Option Dimensions and Weights