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Terra Part #Price Ships in
120 V Powder-Coated Steel Horizontal ISO 6 36.75" 30" 30" Optional ISO 5 9620-74 $5,939 5-9 Days2
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120 V Powder-Coated Steel Horizontal ISO 6 48.75" 30" 30" Optional ISO 5 9620-75 $6,338 5-9 Days3
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120 V Powder-Coated Steel Horizontal ISO 6 72.75" 30" 30" Optional ISO 5 9620-76 $8,755 5-9 Days4
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120 V Powder-Coated Steel Horizontal ISO 6 96.75" 30" 30" Optional ISO 5 9620-78 $9,043 5-9 Days5
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Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
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Product Details
Product Details
  • Available Certified ISO Grade Designs: ISO 6, ISO 7, ISO 8
  • Horizontal laminar flow (HLF) station with optional table configurations (tables purchased separately)
  • Provides ISO 5 (Class 100) particle-free laminar airflow for contamination-sensitive work
  • Static-Dissipative PVC side panels help maintain a laminar flow of HEPA filtered air without particle buildup
  • Includes High Efficiency Particulate Air (HEPA) Filter FFU(s): 99.99% efficient at 0.3µm particle diameter.
  • Includes FDA-approved silicone sealant; specify alternative sealant if needed
  • Horizontal flow provides laminar airflow parallel to work surface, reducing turbulent effects that can occur from vertical airflow striking perpendicular to work surface.
  • Horizontal airflow makes it easier to position and stagger sterile equipment and materials on the work surface closer to the filter face (upstream from other potential contaminants).
  • HLF also provides sensitive samples protection from contamination during manual handling or pipetting
  • UL-listed Fan Filter Units (FFUs) are manufactured to the highest standards to reduce the risk of damage, injuries, and electrical hazards.
  • A 3-speed switch allows low, medium, and high settings with an average airflow velocity of 90+ feet per minute at 640+ CFM.
  • Low-noise WhisperFlow® FFU reduces background noise, registers under 50 dBA at 12" (305 mm) from filter face for easy communication and minimal disruption.
  • Internal baffling plates and anodized aluminum diffuser panel ensure uniform air speed across the filter face
  • Turnkey system comes complete with hood, stand, HEPA FFU(s), LED lighting
  • Operation Status Indicator LED flashes if fan is not operational
  • Construction meets or exceeds ISO 7/Class 10,000 for cGMP, IEST, ASTM and ISO 14644-1 standards.
  • Opt for ULPA filter to remove 99.999% of particles measured at 0.12µm or larger.
  • Work surface not included unless ordered with the unit.
  • Customer is responsible for installation unless ordered with System Integration Fee, Class D.
  • NOTE: ValuLine®® hoods are pre-configured designs that cannot be customized. Please call your Terra sales specialist to discuss appropriate models for custom requirements.
  • NOTE: Laminar flow hoods are not appropriate in the presence of biohazards. Only an approved containment system, such as a Class II, Type A2 biosafety cabinet, should be used in applications requiring Biosafety Level (BSL) 2 or 3 containment.

Available Certified ISO Grade Designs: ISO 6, ISO 7, ISO 8

Certified ISO Grade Design: ISO 6

UL File Number: E326560

UL Standard: UL 507

ISO Rated Air Cleanliness: ISO 5

Marks & Listings: UL, ULC

ValuLine® Horizontal Laminar Flow Workstations

  • Terra Universal WhisperFlow Laminar Flow Hoods Terra Universal WhisperFlow Laminar Flow Hoods
  • Horizontal Laminar Flow Hood Smoke Test
Terra Universal WhisperFlow Laminar Flow Hoods
Features & Benefits

Features and Benefits

Learn More: ValuLine® HLF Specifications

Valuline Horizontal Laminar Flow Workstations

Important Note: This work station is designed for particle-sensitive applications and does not protect operators against hazardous fumes, vapors or aerosols. See Terra's exhaust purification systems for operations involving hazardous fumes.

  • Construction: Fabricated from welded 16-gauge C.R. steel; includes adjustable levelers
  • Work Surface: 304 Stainless steel
  • Finish: Exterior surfaces feature a chip-resistant, powder-coat finish
  • Prefilters: Disposable fiberglass
  • Final Filters: Choice of HEPA (rated 99.99% efficient @ 0.3 µm particles) or ULPA (rated 99.999% efficient @ 0.12 µm particles)
  • Lighting: Fluorescent type. Recessed to eliminate air flow disturbance. Accepts lens for yellow light, if necessary
  • Fan/Motor: Brushless, 1/3-HP, electrically-commutated motor, centrifugal type with backward-inclined fans and sealed bearings; rated for continuous duty; furnished with overload protection
  • Average Airflow Velocity: 109 (± 10) FPM (0.55 m/s) at medium speed, measured 12" (305 mm) below filter face
  • FFU Air flow: 767 CFM (2'x4' model) - all models rated at 109 FPM (0.55 m/s) at medium setting under HEPA filter load
  • Sound level: 40 dBA, measured no more than 12"(305 mm) from filter face @ 109 FPM (0.55 m/s)
  • Performance: Dust count exceeds Class 10 requirements (per Fed-Std 209E)
  • Backpressure Gauge: Minihelic® gauge, 0 - 3" Water Column monitors backpressure across filter
  • Electrical: 115VAC, 50/60Hz, single phase (220VAC, 50/60Hz available). Consumes 280W/2.4A at the avg air speed. Meets the requirements of the National Electrical Code and applicable local codes. All components UL listed and CE marked
  • Options: Audible/visible filter alarm system (measures face velocity); ionizing system (including self-balancing power supply); petcocks for vacuum, DI water, or gas; electropolished stainless steel surfaces; special paint; special voltage and frequency

Minihelic® is a registered trademark of Dwyer Instruments incorporated

Simple User Interface

Operator controls include the ON/OFF switches, blower speed controls, and a Minihelic™ backpressure gauge for monitoring the load on the HEPA filter. When the backpressure roughly doubles from the initial readings, the filter needs replacing.

Long Running FFU Motors

Terra’s filter fan unit motors are rated for 5 years of continuous, 24/7 operation, if the HEPA filters are consistently replaced. To accurately monitor your HEPA filter’s saturation levels, purchase Terra’s audible and visual filter replacement alarm system.

WhisperFlow® Cleanroom Fan Filter Units

Design features internal baffling and an aluminum diffuser to provide quiet operation along with uniform air speed for ISO-compliant laminar flow.

Horizontal Laminar Airflow Diagram

HEPA-filtered laminar airflow washes across the work surface, preventing contaminants from settling on sensitive surfaces.

HEPA Filter Access Panels

For horizontal laminar flow hoods, the rear vent panel can be easily removed to access the HEPA filters.

Status Indicator Light

The Terra Universal logo incorporates an LED light that functions as a status indicator. The TUI logo will flash when the unit is connected to power, but the blower is switched off. A solid glow indicates the station is fully operational.

Clean and Durable Powder Coat Finish

Terra’s signature white powder coat finish provides a high quality, durable barrier to protect against corrosion, plus a clean and attractive aesthetic. The advanced heat-fused formulation exceeds ASTM and ISO paint standards to resist chipping, scratching, fading, and wearing.

Durable Embedded Static-Dissipative Layers

Terra's SDPVC features bonded dissipative layers that resist abrasion. SDPVC desiccators retain their surface resistivity of 106 - 108 ohms/square indefinitely (unlike spray-on coatings that can wear off after a few years), protecting your materials against ESD damage. Further, the control of static charges eliminates particle attractions, helping maintain clean surfaces.

WhisperFlow Quiet Operation Reduces Distracting Background Noise

Exposure to loud noises can lower the ability to focus on work and listen selectively, which may also lead to safety issues. Typical AC units can be annoyingly loud, measuring in the range of 70 dB (comparable to a vacuum cleaner). Terra’s WhisperFlow design produces far lower noise levels for a quiet environment comparable to a library. At 90 ft/min output, units measure under 50 dB from only 1 ft away (roughly 75% quieter than 70dB).

Long-Term Customers

Terra is committed to building long-term relationships with satisfied clients; 94% of orders each year come from repeat customers

Complete Project Transparency

Terra is dedicated to complete transparency on project status, shipment tracking, and installation scheduling
Available Accessories
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Static-Neutralizing Ionizing Bar

    Airflow from the blower distributes positive and negative ions onto the surfaces below, neutralizing static charges that can lead to electro-static discharge and attract particles.
  • Lighthouse Handheld Airborne Particle Counters

    Lightouse portfolio of handheld airborne particle counters ensure accurate readings of cleanrooms and critical environments
  • Replacement Filters

    Purchase replacement filters ahead of time to prevent costly operational interruptions and avoid damage to fan blowers caused by excessive backpressure from long overdue filter replacements.
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Manuals & Resources
Manuals & Resources
Blog Post
Laminar Flow Hood Features Comparison

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