Baker EdgeGard EG4320 Horizontal Laminar Flow Clean Bench

Brand : Baker

Product Code : SKU 1608B CL BENCH

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Baker EdgeGARD EG4320 4' Horizontal Laminar Flow Clean Bench

The Baker EdgeGARD EG4320 is a 4-foot horizontal laminar flow clean bench designed to provide an ISO Class 5/Class 100 environment for nonhazardous samples, products, and processes requiring protection from airborne particulate contamination. With HEPA-filtered horizontal airflow, a stainless-steel work surface, and an unusually tall 34⅛-inch interior workspace, the EG4320 combines a compact 4-foot footprint with considerably more vertical working clearance than many conventional clean benches.

The additional interior height is one of the EG4320's most useful features. While maintaining the same 50-inch exterior width and 46½-inch interior width as the Baker EG4252, the EG4320 provides approximately six additional inches of vertical working room. This makes it particularly useful for laboratories that need to accommodate taller instruments, containers, assemblies, or other equipment without moving to a substantially wider clean bench.

Available used and refurbished from American Instrument Exchange, the Baker EdgeGARD EG4320 is inspected and tested before shipment and includes a 90-day warranty.

Key Features

4-foot horizontal laminar flow clean bench
ISO Class 5/Class 100 clean work environment
HEPA-filtered horizontal laminar airflow
46½-inch-wide interior work surface
Extra-tall 34⅛-inch interior working height
Approximately 6 inches more vertical clearance than the Baker EG4252
22-inch-deep work area
Stainless-steel work surface and side walls
HEPA filter with 99.99% minimum efficiency at 0.3 µm
High-velocity return air slots help maximize product protection
Washable prefilter helps extend HEPA filter life
GFCI duplex electrical receptacle
115 V, 60 Hz electrical configuration
Refurbished and tested by American Instrument Exchange
90-day warranty included from American Instrument Exchange

Overview

The Baker EdgeGARD EG4320 creates a particulate-controlled workspace by drawing room air through a prefilter that captures larger contaminants before the air reaches the cabinet's HEPA filtration system. HEPA-filtered air is then directed horizontally across the work surface, providing a continuous supply of clean air around nonhazardous samples and products.

Baker's EdgeGARD horizontal-flow design incorporates high-velocity return air slots intended to help minimize the intrusion of contaminated room air into the workspace. The HEPA supply filter provides a minimum efficiency of 99.99% at 0.3-micron particles, supporting ISO Class 5/Class 100 cleanliness within the working area.

What particularly distinguishes the EG4320 is its increased working height. The interior measures approximately 46½ inches wide by 22 inches deep by 34⅛ inches high. Baker's standard EG4252 provides the same nominal 4-foot width but only 28⅛ inches of interior height. The EG4320 therefore provides approximately six additional inches of vertical clearance without requiring additional laboratory width.

This combination makes the EG4320 especially useful when a conventional 4-foot clean bench provides adequate horizontal workspace but insufficient clearance for taller equipment or processes.

Common Applications

The Baker EdgeGARD EG4320 is designed for nonhazardous applications where protecting samples, products, and processes from airborne particulate contamination is the primary objective.

Typical applications can include sterile media preparation, plant tissue culture, nonhazardous sample preparation, appropriate pharmaceutical production procedures, medical device assembly, electronics assembly and inspection, optical component handling, food research, aerospace component work, and other contamination-sensitive laboratory or manufacturing processes.

The extra-tall work area can be especially useful for procedures involving larger vessels, instruments, fixtures, assemblies, or other equipment that may not fit comfortably inside a standard-height horizontal clean bench.

Because HEPA-filtered air travels horizontally across the work surface and toward the operator, the EG4320 should only be used with materials that do not require personnel or environmental containment.

Ideal Laboratory Environments

The Baker EdgeGARD EG4320 is well suited for biotechnology laboratories, pharmaceutical facilities, medical device manufacturers, electronics and aerospace operations, university research laboratories, hospital laboratories, food science facilities, quality-control departments, and other research or production environments requiring a clean, particulate-controlled workspace.

It can be particularly attractive for laboratories with limited available width. The cabinet provides substantially greater vertical working clearance than a conventional Baker 4-foot EdgeGARD while maintaining a 50-inch exterior width.

For laboratories choosing between different clean bench sizes, this can allow taller equipment to be accommodated without moving to a 5-foot or 6-foot cabinet solely to gain additional usable space.

Key Specifications

Specification	Baker EdgeGARD EG4320
Equipment Type	Horizontal laminar flow clean bench
Nominal Width	4 ft
Airflow	Horizontal laminar flow
Cleanliness Classification	ISO Class 5 / Class 100
Filtration	HEPA
HEPA Filter Efficiency	99.99% minimum at 0.3 µm
HEPA Filter Size	48"W × 36"H × 6"D
Exterior Dimensions	50"W × 34"D × 70–72"H
Interior Dimensions	46.5"W × 22"D × 34.125"H
Work Surface	Stainless steel
Side Walls	Stainless steel
Electrical Outlet	GFCI duplex receptacle
Electrical Requirements	115 V AC, 60 Hz
Rated Current	16 A
Required Breaker	20 A
Net Weight	Approx. 460 lb
Manufacturer	Baker
Model	EdgeGARD EG4320

Refurbishment & Testing

Used laminar flow clean benches should be thoroughly evaluated before being returned to laboratory service. American Instrument Exchange technicians test the Baker EdgeGARD EG4320 to verify proper operation of the controls and blower motor and evaluate the HEPA filter for suitability in laboratory conditions.

AIE's testing procedure incorporates the major elements used during clean bench certification with the goal of preparing the unit to pass final testing following delivery and installation. The stainless-steel work area, lighting, controls, blower system, filtration system, and overall cabinet condition are also inspected during refurbishment.

The clean bench is thoroughly cleaned before shipment. Because cosmetic condition can vary among individual refurbished units, customers can request photographs of the specific equipment included with their order after testing and cleaning have been completed.

This refurbished Baker EdgeGARD EG4320 includes a 90-day warranty from American Instrument Exchange.

Certification Readiness & Service

Proper airflow and HEPA filter integrity are essential to maintaining the ISO Class 5 environment expected from the Baker EdgeGARD EG4320. Clean benches should therefore be evaluated following transportation and installation before being placed into critical service.

American Instrument Exchange works with AIE Laboratory Services to support clean benches and other laboratory airflow equipment throughout Greater Boston and New England. Services can include airflow testing, HEPA filter evaluation and replacement, troubleshooting, preventative maintenance, and laboratory equipment repair.

Final testing following relocation is especially valuable because transportation, filter condition, installation conditions, and room airflow can influence clean bench performance.

Shipping & Installation

The Baker EdgeGARD EG4320 measures approximately 50 inches wide by 34 inches deep and 70 to 72 inches high, depending on configuration. Its relatively narrow 50-inch exterior width can simplify placement in laboratories where floor space is limited, while the taller cabinet provides the increased vertical workspace that distinguishes the EG4320 from the EG4252.

At approximately 460 pounds net weight, the EG4320 should be moved using appropriate material-handling equipment. Laboratories should verify doorway dimensions, corridors, elevators, loading areas, ceiling clearance, electrical service, and the final installation location before delivery.

The EG4320 requires 115 V AC electrical service with a 20-amp circuit according to Baker's current specifications.

American Instrument Exchange can assist with freight coordination and provide additional dimensional and configuration information for planning delivery and installation.

Related Equipment

Laboratories considering the Baker EdgeGARD EG4320 can explore additional clean benches and laminar flow hoods available from American Instrument Exchange, including other Baker EdgeGARD models and horizontal- and vertical-flow configurations from additional manufacturers.

For applications involving infectious agents, biological hazards, or other materials requiring personnel and environmental containment, AIE also carries refurbished biosafety cabinets from Baker, Thermo Scientific, Labconco, Nuaire, and other major manufacturers.

American Instrument Exchange also stocks complementary laboratory equipment including CO2 incubators, laboratory refrigerators, laboratory freezers, and centrifuges.

Clean Bench vs. Biosafety Cabinet

The Baker EdgeGARD EG4320 is a horizontal laminar flow clean bench, not a biosafety cabinet. Its primary purpose is to protect nonhazardous samples, products, and processes from airborne particulate contamination.

HEPA-filtered air travels horizontally across the clean work area and ultimately toward the operator. This airflow arrangement provides product protection but does not provide the personnel and environmental containment associated with a Class II biosafety cabinet.

The EG4320 therefore should not be used for infectious agents, biohazardous samples, toxins, radionuclides, hazardous chemicals, or other substances requiring operator or environmental protection.

Laboratories working with biological hazards should instead select an appropriate Class II biosafety cabinet. For nonhazardous procedures where product cleanliness and particulate control are the primary objectives, a clean bench or laminar flow hood such as the EdgeGARD EG4320 may be the appropriate choice.

Baker EdgeGARD EG4320 Frequently Asked Questions

What size is the Baker EdgeGARD EG4320?

The EG4320 is a nominal 4-foot horizontal laminar flow clean bench. It measures approximately 50 inches wide externally and provides approximately 46½ inches of interior working width.

What makes the Baker EG4320 different from the EG4252?

The primary difference is interior working height. Both models provide approximately 46½ inches of interior width, but the EG4320 has a 34⅛-inch-high work area compared with approximately 28⅛ inches for the EG4252. The EG4320 therefore provides approximately six additional inches of vertical clearance.

How large is the EG4320 work area?

The interior workspace measures approximately 46½ inches wide by 22 inches deep by 34⅛ inches high. This extra-tall workspace is one of the defining features of the EG4320.

What cleanliness classification does the Baker EG4320 provide?

The Baker EdgeGARD EG4320 is designed to provide ISO Class 5, historically referred to as Class 100, cleanliness within the work area.

What type of filter does the EG4320 use?

The EdgeGARD EG4320 uses a HEPA supply filter with a minimum efficiency of 99.99% at 0.3-micron particles. Baker specifies a 48-inch by 36-inch by 6-inch HEPA filter for this model.

Is the Baker EG4320 a biosafety cabinet?

No. The EG4320 is a horizontal laminar flow clean bench intended for product protection. It does not provide the personnel and environmental containment associated with an appropriate Class II biosafety cabinet.

Can the Baker EG4320 be used with biohazardous materials?

No. Because filtered air travels horizontally across the work surface toward the operator, the EG4320 should not be used for biohazardous or otherwise hazardous materials requiring containment.

What electrical service does the Baker EG4320 require?

Baker's current specifications list the EG4320 for 115 V AC operation at 16 amps with a required 20-amp electrical circuit. Laboratories should verify that appropriate electrical service is available at the installation location.

Does American Instrument Exchange test the Baker EG4320 before shipment?

Yes. AIE technicians test the clean bench's controls and blower operation and evaluate the HEPA filter for suitability in laboratory conditions. The equipment is also inspected and thoroughly cleaned before shipment.

Does the Baker EdgeGARD EG4320 include a warranty?

Yes. This refurbished Baker EdgeGARD EG4320 includes a 90-day warranty from American Instrument Exchange.

Testing Procedures for Used and Refurbished Laboratory Equipment

Ensure Accuracy, Safety, and Dependable Performance Across Applications

At American Instrument Exchange, all used and refurbished laboratory equipment undergoes a rigorous, multi-point testing protocol to ensure optimal performance, operational safety, and long-term reliability. Whether the equipment is destined for research, diagnostics, quality control, or production environments, our thorough inspection and testing process is designed to meet the highest standards of laboratory excellence.

Why Testing Used Lab Equipment Is Essential

Before any refurbished laboratory equipment is returned to service, it must be carefully tested to verify:

• Functional integrity and operational performance
• Setpoint accuracy and repeatability (where applicable)
• User interface responsiveness and control features

Proper testing reduces the risk of equipment failure, measurement inaccuracies, or user hazards—helping to ensure consistent results in clinical, academic, biotech, and industrial labs.

Our standardized lab equipment testing procedures are tailored to each equipment type, ensuring every unit meets manufacturer specifications and industry benchmarks.

Key Testing Procedures for Refurbished and Used Laboratory Equipment

1. Initial Visual Inspection

• Examine equipment housing for signs of wear, corrosion, or damage
• Check ports, power cords, and exterior components for tampering or deterioration
• Verify that internal and external parts (racks, shelves, connectors, accessories) are present and undamaged

2. Functional Startup and Operational Testing

• Power on the equipment and verify startup diagnostics
• Confirm functionality of displays, buttons, switches, and control panels
• Run basic functions to confirm proper response and behavior under standard operating conditions

3. Testing and Performance Verification

• Test internal sensors or control systems using industry-standard tools
• Perform operational tests to validate accuracy and consistency
• Verify key performance specifications such as temperature control, timing, speed, or measurement outputs, depending on equipment type

4. Mechanical and Electrical System Testing

• Evaluate motors, pumps, fans, or other moving parts for smooth operation
• Inspect and test wiring, relays, fuses, and circuit boards for safety and reliability
• Test power delivery and grounding compliance

5. Safety and Compliance Checks

• Ensure equipment is grounded and insulated to meet laboratory safety standards
• Test alarms, interlocks, emergency stops, or safety shutdown systems if applicable

6. Final Quality Assurance and Documentation

• Perform extended runtime testing
• Document operational logs, testing results, and any repairs or adjustments made
• Complete a final inspection, thorough cleaning, and packaging for delivery

Trusted Quality from American Instrument Exchange

With over 50 years of experience in laboratory equipment refurbishment, American Instrument Exchange is committed to delivering certified, lab-ready instruments backed by expert testing. Our testing protocols ensure that each piece of equipment—regardless of type—is safe, accurate, and dependable from day one.

Whether you're equipping a startup lab or expanding a high-throughput facility, you can count on our refurbished laboratory equipment to perform with precision and reliability.

Refurbishment Protocol for Used Laboratory Equipment from American Instrument Exchange

At American Instrument Exchange, every piece of used laboratory equipment we offer undergoes a multi-step refurbishment process. Whether it's an analytical balance, centrifuge, freezer, oven, or any other essential lab instrument, our goal is to restore each unit to peak performance—ensuring accuracy, safety, and long-term reliability in scientific, clinical, industrial, and academic environments.

Why Choose Refurbished Lab Equipment from American Instrument Exchange?

• Thoroughly tested for performance, precision, and safety
• Backed by a warranty
• A cost-effective alternative to new equipment
• Environmentally sustainable through equipment reuse and waste reduction
• Serviced by expert technicians with decades of laboratory equipment experience

Step-by-Step Refurbishment Protocol

Every instrument and system refurbished at American Instrument Exchange follows a detailed, industry-aligned process:

1. Initial Intake & Inspection

• Complete visual and structural inspection for cosmetic damage, wear, or corrosion
• Mechanical assessment of hinges, seals, fasteners, motors, and moving parts
• Missing components and damaged items are documented for repair or replacement

2. Cleaning and Decontamination

• Full internal and external cleaning using non-abrasive, lab-safe solutions
• Removal of biological, chemical, or particulate contamination
• Disassembly and cleaning of removable parts such as trays, shelves, and filters

3. Mechanical and Electrical Repair

• Replacement or repair of worn or broken mechanical parts
• Evaluation and servicing of control panels, sensors, switches, and displays
• Testing and repair of electrical wiring, fuses, circuit boards, and power supplies

4. Functional System Testing

• Assessment of all major functions specific to the equipment type (e.g., speed, temperature, force, weight, timing)
• Operation of control interfaces, programming menus, and digital displays
• Verification of stabilization time, responsiveness, and user input reliability

5. Testing and Performance Verification

• Testing of internal sensors, controllers, and measurement systems using certified tools
• Multi-point testing to ensure repeatability, accuracy, and performance consistency
• Confirmation of user-defined setpoints, timing sequences, or programmable cycles

6. Safety and Compliance Checks

• Testing of safety interlocks, alarms, and over-limit protection systems (as applicable)
• Electrical safety inspections, including grounding and insulation verification

7. Final Quality Assurance and Documentation

• Full operational testing under simulated lab conditions
• Completion of performance benchmarks, testing results, and repair logs
• Final cleaning and visual inspection

Trust the Experts at American Instrument Exchange

With over 50 years of experience in the laboratory equipment industry, American Instrument Exchange is a trusted leader in high-quality refurbished lab instruments. Our refurbishment protocols ensure that every piece of equipment we sell is lab-ready—offering the precision, performance, and durability your team can count on.

Whether you’re outfitting a new lab or expanding an existing operation, choose American Instrument Exchange for tested, warrantied, and cost-effective laboratory equipment.

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.

Please contact our team at info@americaninstrument.com for more details.

FAQ

Does the equipment come with a warranty?

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.