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Labconco Purifier 3818521 8' Horizontal Clean Bench with UV Light
The Labconco Purifier 3818521 Horizontal Clean Bench provides an exceptionally large ISO Class 5 work area for laboratories and production facilities that need to protect nonhazardous samples, products, and materials from airborne particulate contamination. At approximately eight feet wide with a 27-inch-deep workspace, the 3818521 provides substantially more working area than conventional 4-foot and 6-foot clean benches, making it particularly useful for larger assemblies, multiple instruments, and workflows involving several operators or materials.
This particular Labconco 3818521 is also equipped with a UV light and a mobile stand with casters. Available used and refurbished from American Instrument Exchange, the clean bench is inspected and tested before shipment and includes a 90-day warranty.
Key Features
8-foot horizontal laminar flow clean bench
Provides an ISO Class 5 work environment
HEPA-filtered horizontal airflow
Approximately 97.75-inch-wide interior workspace
27-inch-deep work area
Includes UV light
Includes supporting stand with casters
Designed to protect nonhazardous samples and products from particulate contamination
Large work area accommodates oversized equipment and multi-step workflows
Refurbished and tested by American Instrument Exchange
90-day warranty included from American Instrument Exchange
Overview
The Labconco Purifier 3818521 is a large horizontal laminar flow clean bench designed for applications where maintaining a clean environment around nonhazardous samples or products is the primary objective. HEPA-filtered air travels horizontally through the work area, creating an ISO Class 5 environment that helps minimize exposure of critical materials to airborne particulate contamination.
Its approximately eight-foot-wide workspace is one of the most significant advantages of this model. The interior measures approximately 97.75 inches wide by 27 inches deep by 30.5 inches high, providing ample room for larger laboratory equipment, assemblies, trays, containers, or multiple work processes that may be difficult to accommodate inside a smaller clean bench.
The included UV light adds another useful feature for laboratories that incorporate ultraviolet exposure into established surface-treatment protocols. UV exposure should be considered a supplemental procedure rather than a replacement for routine cleaning and appropriate laboratory decontamination practices.
Common Applications
The Labconco 3818521 is suitable for nonhazardous procedures requiring protection from airborne particulate contamination. Typical applications include plant tissue culture, media and plate preparation, nonhazardous sample preparation, electronics inspection and assembly, medical device assembly, component inspection, pharmaceutical preparation, and other clean-work procedures.
The unusually large working area also makes this model particularly useful when smaller laminar flow hoods do not provide sufficient room for equipment, materials, or complex workflows.
Because airflow travels horizontally across the work surface and toward the operator, applications must be limited to materials that do not require personnel or environmental containment.
Ideal Laboratory Environments
The Labconco Purifier 3818521 is well suited for biotechnology laboratories, pharmaceutical facilities, medical device manufacturers, electronics and semiconductor operations, university research laboratories, quality-control departments, plant science laboratories, and other facilities requiring a large particulate-controlled workspace.
Its 8-foot width may be especially valuable for laboratories that need to place larger instruments or assemblies inside the clean zone while retaining adequate room for sample manipulation. The mobile stand with casters can also simplify positioning during installation or when laboratory layouts need to be adjusted.
Key Specifications
Specification
Labconco Purifier 3818521
Equipment Type
Horizontal laminar flow clean bench
Nominal Width
8 ft
Airflow
Horizontal laminar flow
Cleanliness Classification
ISO Class 5
Filtration
HEPA
Exterior Dimensions
99.5"W × 39.5"D × 77.37"H
Workspace Dimensions
97.75"W × 27"D × 30.5"H
UV Light
Included
Stand
Included
Casters
Included
Application
Product/sample protection
Manufacturer
Labconco
Model
3818521
Refurbishment & Testing
Used laboratory clean benches should be evaluated for mechanical operation, airflow performance, and HEPA filter condition before returning to service. American Instrument Exchange technicians test clean benches to confirm proper operation of the controls and blower motor and evaluate the HEPA filter for suitability in laboratory use.
The Labconco 3818521 is also thoroughly cleaned before shipment. Because AIE may stock multiple examples of the same model, cosmetic condition and individual configuration can vary. Customers can request photographs of the specific equipment included with their order after testing and cleaning have been completed.
This refurbished Labconco Purifier 3818521 includes a 90-day warranty from American Instrument Exchange.
Certification Readiness & Service
Proper airflow and HEPA filter integrity are critical to maintaining the ISO Class 5 environment expected from a horizontal laminar flow clean bench. AIE tests clean benches prior to shipment with the goal of ensuring that they are ready for final on-site testing after installation.
For customers in Greater Boston and throughout New England, AIE Laboratory Services can provide testing and service for clean benches and other laboratory airflow equipment. Services include airflow testing, HEPA filter evaluation and replacement, troubleshooting, preventative maintenance, repair, and related field services.
Final performance testing after delivery is particularly valuable because transportation, relocation, installation conditions, and room airflow can affect clean bench performance.
Shipping & Installation
With exterior dimensions of approximately 99.5 inches wide by 39.5 inches deep by 77.37 inches high, the Labconco 3818521 requires more delivery planning than a conventional 4-foot or 6-foot clean bench. Laboratories should verify loading docks, exterior and interior doorways, corridors, elevators, ceiling clearance, and the final installation area before shipment.
The included stand with casters provides mobility once the clean bench is installed, but the overall size of the assembled unit should still be considered when determining its final location.
American Instrument Exchange can assist with freight coordination and provide additional dimensional information to help customers plan delivery and installation.
Related Equipment
Laboratories considering the Labconco 3818521 can explore additional clean benches and laminar flow hoods available from American Instrument Exchange, including smaller configurations for facilities that do not require an 8-foot work area.
For applications involving biological hazards or other materials requiring personnel and environmental protection, AIE also stocks refurbished biosafety cabinets from Labconco, Thermo Scientific, Baker, Nuaire, and other major manufacturers.
The Labconco Purifier 3818521 is a clean bench rather than a biosafety cabinet. Its purpose is to protect nonhazardous samples, products, and materials from particulate contamination by directing HEPA-filtered air horizontally through the work zone.
That airflow ultimately moves toward the operator. As a result, a horizontal clean bench does not provide the personnel and environmental containment associated with a Class II biosafety cabinet.
The Labconco 3818521 should not be used with biohazardous materials, toxins, radionuclides, or other substances requiring operator protection or containment. Laboratories performing those procedures should instead select an appropriate Class II biosafety cabinet.
For nonhazardous applications where maintaining a clean, particulate-controlled work environment is the primary objective, a clean bench or laminar flow hood may be the more appropriate choice.
The Labconco 3818521 is a nominal 8-foot clean bench with a workspace measuring approximately 97.75 inches wide by 27 inches deep by 30.5 inches high. Its large work area makes it well suited for oversized equipment, multiple containers, assemblies, and workflows requiring considerably more space than a conventional 4-foot or 6-foot clean bench.
Does the Labconco 3818521 include a UV light?
Yes. This Labconco 3818521 is equipped with a UV light. UV exposure should be incorporated into an appropriate laboratory protocol and should not be considered a substitute for routine cleaning and other established contamination-control procedures.
Does this Labconco clean bench include a stand?
Yes. The refurbished unit offered by American Instrument Exchange includes a supporting stand with casters.
Is the Labconco 3818521 a biosafety cabinet?
No. The 3818521 is a horizontal laminar flow clean bench intended primarily to protect nonhazardous products and samples from particulate contamination. It does not provide the personnel and environmental protection of a Class II biosafety cabinet.
What applications are appropriate for an 8-foot horizontal clean bench?
Applications can include plant tissue culture, media preparation, electronics inspection, medical device assembly, pharmaceutical preparation, component inspection, and other nonhazardous processes requiring a large clean work area.
Can the Labconco 3818521 be used with biohazardous materials?
No. Horizontal airflow moves across the work area toward the operator, so this clean bench should not be used with biohazardous materials, toxins, radionuclides, or other substances requiring containment.
Does American Instrument Exchange test the Labconco 3818521 before shipment?
Yes. AIE technicians test the clean bench's controls and blower operation and evaluate the HEPA filtration system before shipment. The unit is also cleaned as part of the refurbishment process.
Does the Labconco 3818521 include a warranty?
Yes. This refurbished Labconco Purifier 3818521 includes a 90-day warranty from American Instrument Exchange.
CLICK HEREto see the Labconco 3818521 Purifier 8' horizontal laminar flow clean bench on our YouTube channel
Testing Procedures for Used and Refurbished Biosafety Cabinets
Ensure Containment, Airflow Integrity, and Operator Safety
Used and refurbished biosafety cabinets (BSCs) from American Instrument Exchange are thoroughly tested to ensure they meet NSF/ANSI 49 performance standards for containment, airflow uniformity, and HEPA filtration. Each Class I, II, or III unit is evaluated through a series of specialized inspections and certifications, ensuring the cabinet performs reliably in research, clinical, and pharmaceutical lab environments.
Why Testing Used Biosafety Cabinets Is Essential
Before any biosafety cabinet is deployed in a working lab, it must be tested for:
• HEPA filter integrity and leak-free performance
• Inflow and downflow air velocity balance
• Containment efficiency and personnel protection
• Electrical system function and safety compliance
• Cleanliness and readiness for sterile applications
Proper testing of refurbished biosafety cabinets helps prevent cross-contamination, exposure to hazardous materials, and airflow disruption—critical for maintaining laboratory protocols. Our structured multi-point BSC testing protocol ensures dependable protection for operators, products, and the lab environment.
Key Testing Procedures for Refurbished and Used Biosafety Cabinets
1. Initial Visual Inspection
• Inspect exterior panels, window sashes, hinges, and seals for signs of wear or damage
• Confirm visibility and integrity of the viewing window
• Check power cords, display screens, and control interfaces for usability
2. Cabinet Decontamination and Cleaning
• Interior and exterior cleaned with non-corrosive disinfectants
• Decontamination protocols followed to remove biological contaminants
• Work surface, sidewalls, and return air grills are fully sanitized
• Conduct aerosol challenge test using PAO or DOP to verify HEPA filter seal integrity
• Identify and resolve any filter leaks in accordance with NSF/ANSI 49 standards
• Ensure HEPA filters are correctly seated and uncompromised
4. Inflow and Downflow Velocity Testing
• Measure air velocities using calibrated thermo-anemometers
• Confirm inflow velocity meets requirements
• Verify downflow uniformity within the work zone to prevent turbulence and contamination
5. Airflow Smoke Pattern Testing
• Conduct visual smoke tests to demonstrate laminar airflow and containment
• Confirm that airflow barriers prevent cross-contamination and exposure
6. Electrical Safety and Alarm System Checks
• Inspect grounding, insulation resistance, and GFCI protection
• Test alarm functionality for sash position, airflow disruption, and power failure
• Verify interior lighting, outlets, and blower controls operate reliably
7. Final Certification and Quality Assurance
• Run full performance test cycle and confirm compliance with NSF/ANSI 49 and manufacturer specs
• Document data and generate a detailed service report
Guaranteed Performance from American Instrument Exchange
All refurbished biosafety cabinets from American Instrument Exchange are tested and verified to ensure maximum containment, user protection, and airflow performance. Whether used for microbiology, tissue culture, pharmaceutical compounding, or other work necessitating containment, our BSCs meet industry standards—so your team can work safely and confidently from day one.
Repair and Refurbishment Protocol for Used Biosafety Cabinets
Certified Protection and Performance from American Instrument Exchange
At American Instrument Exchange, every used biosafety cabinet (BSC) we offer is thoroughly repaired and refurbished to meet the highest standards for safety, airflow performance, and compliance. Whether it’s a Class I, Class II Type A2/B2, or Class III unit, we follow a meticulous refurbishment process to ensure your BSC provides reliable containment, sterile workspace conditions, and long-term durability.
Why Choose a Refurbished Biosafety Cabinet from American Instrument Exchange?
Fully tested and certified for airflow integrity and containment
Backed by warranty and performance guarantee
Cost-effective alternative to new biosafety cabinets
Environmentally responsible through expert reuse and restoration
Serviced by experienced technicians trained in NSF/ANSI 49 protocols
Step-by-Step Refurbishment Protocol
Every biosafety cabinet at American Instrument Exchange undergoes the following comprehensive multi-stage process to ensure it is lab-ready:
1. Initial Intake & Inspection
• Visual inspection of cabinet exterior, control panel, and sash mechanism
• Evaluation of hinges, seals, gaskets, and electrical components
• Missing parts or functional issues are documented for repair
2. Cleaning and Decontamination
• Full internal and external cleaning using non-abrasive, disinfectant-safe products
• Decontamination protocols followed to remove biohazardous or chemical residue
• Removable surfaces, work trays, and grilles are cleaned and sanitized
3. Mechanical and Electrical Repair
• Repair or replacement of worn components, including sash latches, lighting, and controls
• Electrical systems including switches, alarms, and outlets are tested and serviced
• Wiring is inspected and repaired to meet safety and performance standards
4. HEPA Filter Evaluation and Replacement
• Filters are tested for integrity using DOP/PAO aerosol challenge testing
• HEPA filters are replaced with OEM or equivalent filters
• Filter seals are verified for leak-free performance
5. Airflow and Performance Testing
• Inflow and downflow velocities are measured using calibrated instruments
• Smoke pattern testing confirms laminar airflow and containment effectiveness
• Blower motor function and airflow uniformity are verified across the cabinet
6. Safety System Verification
• Alarms for airflow disruption, sash height, and power loss are tested
• GFCI protection, lighting, and emergency shutoff systems are confirmed functional
7. Final Quality Control and Certification
• Performance testing is conducted to confirm NSF/ANSI 49 compliance (where applicable)
• Final visual inspection and cleaning performed prior to shipping
• Detailed service report and airflow test results provided with each unit
Trust the Experts at American Instrument Exchange
With over 50 years of experience in the lab equipment industry, American Instrument Exchange is a trusted name in refurbished biosafety cabinets. Our repair and refurbishment protocol ensures each cabinet provides dependable protection for personnel, products, and the environment—delivering maximum safety at a fraction of the cost of new.
Warranty Information
All used equipment sold by American Instrument Exchange is refurbished/reconditioned, tested to meet specifications, cleaned, and comes with a 90-day warranty from the date of shipment unless otherwise specified. New products include a warranty from the manufacturer. Your warranty is only valid if you have paid your invoice. If your invoice is over 30 days old, warranty work will not be performed until your invoice is paid in full. American Instrument Exchange is not liable for any special or consequential damages that result from the use of, or the inability to use, the materials on this site or the performance of the products,
Exceptions include international sales and items that are agreed to be sold with a lesser warranty or items that are agreed to be sold “as is.”
Should there be visible shipping damage to packaging or concealed shipping damage to item(s) supplied, buyer must communicate such damage to the delivering entity or carrier upon receipt first and to American Instrument the same day item is accepted / signed for. Failure to do so voids warranty. Customer decision to involve / procure third party or OEM service other than American Instrument or AIE assigned vendors to resolve in-warranty instrument failure or defect without first placing a service call to American Instrument voids warranty.
Return & Cancellation Policy
American Instrument Exchange will authorize the return of and issue a full refund for any equipment that is not working as represented and could not be replaced or repaired to the customer’s satisfaction by AIE or a representative of AIE during the warranty period. Returns without prior authorization and an RMA number will not be accepted.
Customers are responsible for proper packaging of the equipment and all included accessories. American Instrument will pay for insurance and shipping costs. Non-inventory items bought specifically to fill customer orders may possibly be returned, but on a case by case basis.
Customers who cancel orders after refurbishing has begun or after delivery where there are no equipment performance issues may be subject to a Restocking/Cancellation Fee of 20% or more and responsible for shipping costs for both the delivery and return.
Ongoing and Extended Support Options
American Instrument Exchange is able to provide additional repair and support services outside the warranty terms for most products that sell.
For biosafety cabinets, clean benches, chemical fume hoods, and other clean air products our team at AIE Laboratory Services can provide certifications, repairs, decontaminations, and other services for customers throughout New England, and guidance and limited technical assistance for any customers in the US and Canada for new or refurbished biosafety cabinets purchased from American Instrument Exchange.
For all other products, the repair service team at American Instrument Exchange can provide both field and depot repair evaluations. We can easily schedule and coordinate the pick-up and transportation of your malfunctioning equipment. By offering hourly rates lower than most OEM service providers and eliminating travel time for technicians, we help reduce repair costs. Furthermore, our lab depot repair service minimizes or eliminates scheduling delays. Our experienced service technicians are qualified to restore your equipment to factory specifications.
Yes, all equipment from American Instrument Exchange comes with a warranty. Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer's specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.
How do you test and recondition the equipment?
Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality. We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly.
How do products ship from American Instrument Exchange?
We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements.
Return and order cancellation policy
American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer's satisfaction during the warranty period. Customers who cancel orders after refurbishing has begun will be subject to a cancellation and restocking fee of between 20% and 40%.
Are discounts available for educational or non-profit institutions, or for bulk purchases?
Yes – call or email us today with a list of equipment you're looking for and we can potentially put together a quote that includes a discount.
How does your price matching policy work?
We strive to keep our pricing competitive and reasonable. If you find comparable items for sale at a lower price from other vendors please send us a link and or quote for the item and we'll do our best to match or beat the price.
Can I see the equipment in person before committing to a purchase?
Customers are welcome to make an appointment to view equipment in our warehouse. Given our workload we may not be able to test or clean the equipment prior to your arrival if you have not committed to an order.
1023 Western Avenue is a working warehouse, not a showroom, and customers should dress appropriately and wear closed toe shoes.
Can I ship products that I purchased elsewhere to American Instrument for repair?
Yes – please see our repair services page for more information.
