Baker Edgegard EG4252 laminar flow clean bench

Brand : Baker

Product Code : SKU 1605 CL BENCH

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Baker EdgeGARD EG4252 4' Horizontal Laminar Flow Clean Bench

The Baker EdgeGARD EG4252 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. Combining HEPA-filtered horizontal airflow with a compact 50-inch exterior width and a spacious stainless-steel work area, the EG4252 is a versatile clean-air workstation for research, pharmaceutical, biotechnology, manufacturing, electronics, and other contamination-sensitive applications.

The EG4252 is the standard-height 4-foot model in Baker's EdgeGARD horizontal-flow family, providing approximately 46.5 inches of working width, 22 inches of depth, and 28 inches of interior height. This makes it a practical choice for laboratories that need a full-size clean workspace without the additional vertical clearance of the taller EG4320.

Available used and refurbished from American Instrument Exchange, the Baker EdgeGARD EG4252 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
46.5-inch-wide interior work surface
Approximately 28-inch interior working height
22-inch-deep workspace
Designed for product and sample protection
HEPA filtration with 99.99% efficiency at 0.3 µm
Prefilter captures larger particles before air reaches the HEPA filter
Approximately 100 fpm horizontal airflow
Compact 50-inch exterior width
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 EG4252 creates a controlled clean-air environment by drawing room air into the cabinet and through a prefilter, which removes larger dust and particulate contaminants. Air then passes through the cabinet's HEPA filtration system before being directed horizontally across the work surface.

Baker's horizontal laminar airflow design continuously supplies HEPA-filtered air around samples, materials, and products within the workspace. AIE specifies an average airflow velocity of approximately 100 feet per minute for the EG4252, helping maintain ISO Class 5/Class 100 conditions for contamination-sensitive procedures.

One of the EG4252's principal advantages is its balance of usable workspace and overall footprint. The cabinet is approximately 50 inches wide externally while providing about 46.5 inches of interior working width. Its approximately 28-inch-high work area accommodates most routine clean-bench procedures without requiring the larger cabinet dimensions associated with extra-tall or 6-foot models.

For laboratories comparing Baker's 4-foot EdgeGARD models, the EG4252 is the conventional-height option, while the EG4320 provides approximately six additional inches of vertical working clearance.

Common Applications

The Baker EdgeGARD EG4252 is intended for nonhazardous applications where protecting samples, products, or processes from airborne particulate contamination is the primary objective.

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

Its 4-foot configuration provides sufficient working room for many routine procedures while occupying considerably less laboratory space than a 6-foot or 8-foot clean bench.

Because HEPA-filtered air travels horizontally across the workspace and toward the operator, the EG4252 should only be used with nonhazardous materials that do not require personnel or environmental containment.

Ideal Laboratory Environments

The Baker EdgeGARD EG4252 is well suited for biotechnology laboratories, pharmaceutical facilities, medical device manufacturers, electronics facilities, aerospace operations, university research laboratories, hospital laboratories, food science facilities, quality-control departments, and other research or production environments requiring particulate-controlled working conditions.

Its compact 4-foot configuration can be particularly useful for laboratories where floor space is limited or where a dedicated clean bench is needed for a specific procedure or workstation.

For applications that require substantially taller instruments or assemblies, the Baker EG4320 provides a similar 4-foot footprint with additional interior height. For workflows requiring greater horizontal working space, larger EdgeGARD models may be more appropriate.

Key Specifications

Specification	Baker EdgeGARD EG4252
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% at 0.3 µm
Average Airflow Velocity	Approx. 100 fpm
Exterior Dimensions	50"W × 34"D × 64"H
Interior Dimensions	46.5"W × 22"D × approx. 28"H
Electrical Requirements	115 V, 60 Hz
Power Cord	Included
Manufacturer	Baker
Model	EdgeGARD EG4252

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 EG4252 to verify proper operation of the controls and blower motor and evaluate the HEPA filter for suitability in laboratory conditions.

AIE's clean bench testing incorporates the primary elements of clean bench certification with the goal of preparing the unit to pass final certification following delivery and installation. The work area, lighting, controls, blower system, filtration system, cabinet, and other functional components are inspected as part of the refurbishment process.

The clean bench is also thoroughly cleaned before shipment. Because cosmetic condition and configuration 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 EG4252 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 a laminar flow clean bench. After transportation and installation, the Baker EG4252 should be evaluated according to applicable laboratory procedures 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 related laboratory equipment repair.

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

Shipping & Installation

The Baker EdgeGARD EG4252 measures approximately 50 inches wide by 34 inches deep by 64 inches high, making it relatively compact for a full-size 4-foot clean bench.

Its approximately 50-inch exterior width can simplify installation in laboratories where available space is limited. Laboratories should nevertheless verify doorways, corridors, elevators, loading areas, electrical service, and the final installation location before shipment.

This EG4252 operates on 115 V, 60 Hz electrical service. Because electrical configurations can vary among older laboratory equipment, customers should confirm the electrical requirements shown on the specific unit before installation.

American Instrument Exchange can assist with freight coordination and provide additional dimensional and configuration information to help customers prepare for delivery.

Related Equipment

Laboratories considering the Baker EdgeGARD EG4252 can explore additional clean benches and laminar flow hoods available from American Instrument Exchange, including other Baker EdgeGARD models and horizontal- and vertical-flow clean benches from additional manufacturers.

For applications requiring additional vertical working clearance, the taller Baker EG4320 offers approximately six additional inches of interior height while retaining a similar 4-foot footprint. Laboratories requiring greater horizontal workspace may instead consider 6-foot EdgeGARD models.

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 EG4252 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 moves horizontally across the work surface and ultimately toward the operator. This airflow configuration provides product protection but does not provide the personnel and environmental containment associated with a Class II biosafety cabinet.

The EG4252 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 EG4252 may be the appropriate choice.

Baker EdgeGARD EG4252 Frequently Asked Questions

What size is the Baker EdgeGARD EG4252?

The EG4252 is a nominal 4-foot horizontal laminar flow clean bench. The cabinet measures approximately 50 inches wide externally and provides approximately 46.5 inches of interior working width.

How large is the Baker EG4252 work area?

The interior workspace measures approximately 46.5 inches wide by 22 inches deep by approximately 28 inches high, providing ample room for routine laboratory and production procedures while maintaining a relatively compact footprint.

What is the difference between the Baker EG4252 and EG4320?

Both are 4-foot horizontal-flow EdgeGARD clean benches with approximately 46.5 inches of interior width. The primary difference is working height. The EG4252 provides approximately 28 inches of interior height, while the EG4320 provides approximately 34 inches. The EG4320 may therefore be preferable for taller equipment, while the EG4252 offers a more compact standard-height configuration.

What cleanliness classification does the Baker EG4252 provide?

The Baker EdgeGARD EG4252 is designed to provide ISO Class 5 conditions, historically referred to as Class 100, within the clean work area.

What type of airflow does the EG4252 use?

The EG4252 uses horizontal laminar airflow. Room air is prefiltered and then passed through HEPA filtration before clean air travels horizontally across the work surface.

Is the Baker EdgeGARD EG4252 a biosafety cabinet?

No. The EG4252 is a clean bench designed for product protection. It does not provide the personnel and environmental containment associated with an appropriate Class II biosafety cabinet.

Can the Baker EG4252 be used with biohazardous materials?

No. Because HEPA-filtered air travels horizontally across the work surface toward the operator, the EG4252 should not be used with biohazardous or otherwise hazardous materials requiring containment.

What electrical service does the Baker EG4252 require?

This EG4252 operates on 115 V, 60 Hz power. Customers should confirm the exact amperage and electrical requirements of the individual refurbished unit before installation.

Does American Instrument Exchange test the Baker EG4252 before shipment?

Yes. American Instrument Exchange tests refurbished clean benches to verify proper operation of the controls and blower motor and evaluates the HEPA filter for suitability in laboratory conditions. Equipment is also thoroughly cleaned before shipment.

Does the Baker EdgeGARD EG4252 include a warranty?

Yes. This refurbished Baker EdgeGARD EG4252 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.