2900-20
Terra Part # 2900-20
$5,364
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Accessories related to Terra Part # 2900-20
40253
Fume Hood; Ductless, Exhaust Fume, Polypropylene, 45" W x 28" D x 41" H, 120 V
  • Includes hood, vapor-sealed fluorescent light, and two High 3000 RPM blower
  • High capacity blower maintains air speed 181 fpm of vertical working room
  • Features a quick-release filter housing
  • Operation Status Indicator flashes if fan is not operational
  • Not for use with flammable or explosive materials
  • This fume hood features dual blowers to ensure a safe exhaust flow speed >/= 100 fpm (.51 m/s)
  • Polypropylene construction resists chemical vapors, and an onboard air speed meter monitors operation
  • Power Integration Module (included) feat. switching and breaker protection for all electrical parts
  • 8" (203 mm) -diameter x 1" (25 mm) flange (standard)
  • Includes hood, fluorescent illuminator, blower module, two 1200CFM (2038.8 m³/h) filter housing, and swing vane anemometer
  • Activated carbon filters (order separately) remove common organic fumes to eliminate the need for ducting to a building exhaust system

Manufactured by: Terra Universal

Model: Exhaust Fume

Sash Design: Manual/Tilt-Up

Width: 45"

Depth: 28"

Height: 41"

Sash Opening: 8"

Max Opening: 23" H

Work Area Dimensions: 44" W x 27" D x 26" H

Sash Height: 19"

Light Fixture: Vapor Sealed

Hood Design: Benchtop

Frame Material: Polypropylene

Number of Blowers: 2 Blowers

Type: Ductless

Unit of Measure: EA

Electrical Specifications: 120 V, 8 A, 960 W, 60 Hz

Weight, Product: 107 lb

Dimensions, Product: 45" W x 28" D x 41" H

Weight, Shipping: 266 lb

Dimensions, Shipping: 51" W x 34" D x 49" H

Package Type: Crate

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Specialty Laboratory Hoods

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  • Terra Universal IQ-OQ Process

Features and Benefits

Ductless Exhaust Alternative

Ductless Fume Hoods: An Alternative to Laboratory Exhaust Systems

Exhaust Fume Filtration

Activated charcoal, the most common purification filtration medium, adsorbs chemicals with a molecular weight above 30 and a boiling point above 60°C. Carbon filters are also effective with many other chemicals because of their particular molecular structure.

Adsorption takes place in the active filter zone, the small cross-section of the filter bed in which the material to be removed comes in contact with the filtering medium. This active filter zone moves upward as the filter becomes saturated (see illustration). When it reaches the filter's top surface, there is an initial breakthrough by the contaminant gas; thereafter the percentage of contaminant gas that escapes filtration increases until total saturation of the filter is reached.

Ductless fume hoods manufactured by Terra use activated carbon filters to eliminate most nuisance fumes and can be used in conjunction with HEPA filtration. For more hazardous chemicals like strong acids and bases, specialized Labconco filtered fume hoods can be equipped with a wider range of filters and include an array of safety sensors for breakthrough detection.

Enhancing Filter Performance

To optimize filtration efficiency, any ductless exhaust fume system must ensure that the exhaust stream is exposed to the purification medium for an adequate time. Terra exhaust purification systems satisfy this condition in several ways.

First, our specially selected impeller ventilators are designed to ensure the optimal linear velocity of the airstream—sufficient to maintain a negative pressure in the work area that prevents backflow, but low enough to allow adequate adsorption of fumes by the filtering medium. Our pre-filters also extend exposure time by reducing the airflow through the filter.

Monitoring Filter Effectiveness

A ductless exhaust fume system needs to be monitored in two areas. The user must detect the period between initial contaminant breakthrough and the point at which the contaminant gas reaches the Threshold Limit Value (TLV) for that substance. The velocity of the airstream must also be monitored to ensure an adequate negative pressure and to detect ventilator failure.

Through periodic testing of the exhaust airstream, you can determine the useful filter life in your particular application and gauge filter effectiveness with an elapsed time meter.

An electronic airflow velocity monitor also helps users ensure safe, effective operation and provides an alarm when velocity falls below a user-defined threshold.

Put Safety First!

Avoid filter use in applications involving very toxic substances, very high volumes of contaminants, and unknown or highly volatile chemical reactions. Always make sure that filters are promptly changed when the Threshold Limit Value (TLV) has been reached for any contaminant gases present.

Dual Ventilation Blower with Quick-Release Clips

Dual fans ensure fast, efficient ventilation of micro-contaminants. Quick-release clips along the polyproylene filter housing allow fast, easy filter replacement; unit lifts off hood for easy servicing.

Swinging Vane Anemometer

An air speed monitor is built into the body of the hood at the sash-level. Operators can verify safe exhaust speeds before beginning fume-generating work beneath the hood.

Dual Exhaust Fans

Powerful blowers draw fumes upward through carbon and HEPA filters before releasing the air back into the room. Outside air backfills into the hood through the sash opening, preventing the escape of fumes.

Continuous Product Improvement

At Terra, we strive to develop and produce the highest quality products for our customers to improve health, safety, performance, and yields. Our product quality is enabled by high-grade manufacturing equipment and processes, 45 years of engineering and application expertise, and our commitment to continuously improve.

Global Customer Base

At Terra, we are committed to providing top-tier equipment to customers throughout the world. Over the past 5 years, clients in over 100 countries have purchased equipment from Terra.

Top-Tier Clients

Terra’s key customers include some of the largest research labs, production facilities and universities in the world
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Activated Charcoal Filter

    Activated charcoal filters remove a wide range of chemicals from the airstream to allow ductless fume hood operation. Bonded charcoal minimizes void spaces, improves efficiency, reduces particle sloughing. Not for use with hazardous substances.
  • HEPA Filters Capture Micro-Contaminants

    HEPA (High-Efficiency Particulate Air) Filters rated 99.99% efficient with particles 0.3 microns and larger in diameter.
  • Stainless Steel Spill Tray

    Stainless steel spill tray safely contains a broad range of chemicals
  • Two-Piece Vibration Isolation Stands

    Hood stands are available in a two-piece configuration that isolates vibration generated by the hood fan, reducing motion sickness associated with microscopy work (shown with laminate work surface).
  • UV Germicidal Lamp

    The V-Ray germicidal UV lamp is installed within a Terra hood to inhibit microbial growth on the work surface
  • Benchtop Fume Hood with Automatic Height Adjusting Table

    Benchtop fume hoods help ventilate and remove chemical fumes and particles, allowing for safe indoor release of exhaust. They can also easily mount to an automatic height adjusting table (28”-43”H). Perfect for workstations with heavy or fragile equipment.

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