Baker SterilGARD e3 SG504 Biosafety Cabinet

Baker SterilGARD e3 SG504 Class II Type A2 Biosafety Cabinet

Refurbished Baker SterilGARD e3 SG504 Biosafety Cabinet for Sale

The Baker SterilGARD e3 SG504 is a 5-foot Class II Type A2 biosafety cabinet designed to provide exceptional personnel, product, and environmental protection for laboratories performing contamination-sensitive biological research. Combining Baker's proven airflow technology with energy-efficient engineering and ergonomic design, the SG504 is an excellent choice for biotechnology companies, pharmaceutical manufacturers, hospital laboratories, academic research institutions, and clinical diagnostic facilities that require a larger biological safety cabinet for demanding laboratory workflows.

With its expanded 5-foot work area, the SG504 offers additional workspace for larger culture vessels, multiple operators during training or collaborative procedures, and laboratory workflows involving numerous samples or instruments. The cabinet maintains ISO Class 5 product protection through HEPA-filtered vertical laminar airflow while protecting laboratory personnel from potentially hazardous aerosols and preventing contaminants from entering the surrounding laboratory environment.

At American Instrument Exchange, every Baker SG504 biosafety cabinet is inspected and tested by our technicians before shipment. Unless otherwise specified, new HEPA filters are installed at our facility prior to delivery. Laboratories outfitting new research facilities or expanding existing laboratories may also browse our inventory of refurbished biosafety cabinets, CO₂ incubators, centrifuges, laboratory refrigerators, ultra-low temperature freezers, and other laboratory equipment to build a complete workflow from a single supplier.

Key Features

• Class II Type A2 biosafety cabinet

• Approximately 5-foot nominal cabinet width

• Large interior workspace for high-throughput laboratory procedures

• Vertical laminar airflow with HEPA-filtered supply and exhaust air

• Baker SterilGARD e3 airflow technology

• Energy-efficient electronically commutated (ECM) blower motor

• ReadySAFE standby operating mode

• Ergonomic 10-degree sloped front sash

• LED work area illumination

• Digital airflow monitoring and cabinet controls

• Designed for continuous operation in research, pharmaceutical, and clinical laboratories

Overview

The Baker SterilGARD e3 SG504 was engineered for laboratories that require additional workspace without compromising biological containment. Built around Baker's advanced airflow system and electronically commutated blower technology, the SG504 delivers stable airflow performance while consuming significantly less energy than many earlier-generation biosafety cabinets.

As a Class II Type A2 biosafety cabinet, the SG504 utilizes inward airflow to protect laboratory personnel while HEPA-filtered vertical laminar airflow protects biological samples from contamination. HEPA-filtered exhaust air safeguards the laboratory environment, making the cabinet appropriate for a wide range of microbiological, pharmaceutical, and biotechnology applications.

The cabinet's larger work area is particularly valuable for laboratories processing high sample volumes or working with larger laboratory equipment inside the cabinet. Whether preparing tissue culture flasks, organizing multiple sample racks, or performing pharmaceutical quality control procedures, the SG504 provides the additional workspace needed to improve laboratory efficiency while maintaining excellent contamination control.

Combined with Baker's ReadySAFE standby mode, quiet ECM blower motor, and ergonomically designed front sash, the SG504 delivers dependable containment performance while helping laboratories reduce long-term operating costs.

Why Choose the Baker SG504?

Many laboratories eventually outgrow a standard 4-foot biosafety cabinet. The Baker SG504 provides approximately one additional foot of usable workspace, giving researchers greater flexibility for complex procedures without requiring a larger laboratory footprint than many competing 5-foot cabinets.

The SG504's expanded work surface makes it easier to organize multiple culture vessels, pipettes, reagent containers, and laboratory instruments while maintaining proper aseptic technique. Laboratories processing larger batches of samples or performing repetitive cell culture procedures often find that the increased workspace improves both productivity and operator comfort.

Another significant advantage is Baker's use of an electronically commutated (ECM) blower motor, which automatically maintains proper airflow as filter loading changes over time. Compared with conventional blower systems, ECM technology improves airflow stability while reducing electrical consumption and extending blower efficiency.

The cabinet also incorporates Baker's ReadySAFE standby mode, allowing laboratories to reduce energy usage during periods of inactivity while maintaining a clean work environment. Combined with the ergonomic 10-degree sloped sash, LED lighting, and intuitive digital controls, these features make the SG504 an excellent long-term investment for laboratories seeking dependable biological containment and lower operating costs.

Baker SG504 vs. Older Baker Biosafety Cabinets

The Baker SG504 represents a substantial advancement over previous generations of SterilGARD biosafety cabinets. While earlier Baker cabinets established an excellent reputation for durability and contamination control, the SG504 incorporates numerous improvements designed to reduce operating costs, simplify operation, and enhance user comfort.

One of the most significant upgrades is the incorporation of an electronically commutated (ECM) blower motor, which continuously adjusts blower speed to maintain proper airflow as HEPA filters gradually load during normal operation. This technology provides more consistent airflow while consuming considerably less electricity than traditional blower motors used in many legacy biosafety cabinets.

The SG504 also incorporates Baker's energy-saving standby operating mode, ergonomic front sash design, bright LED lighting, and modern digital monitoring system. Laboratories replacing older SterilGARD cabinets can often reduce operating costs while benefiting from quieter operation, improved airflow control, and enhanced operator ergonomics without changing established laboratory workflows.

Compatible Laboratory Equipment

The Baker SG504 is commonly installed alongside other laboratory instruments that support sterile biological research and pharmaceutical production. Its larger workspace makes it particularly well suited for laboratories operating multiple incubators, centrifuges, and cold storage units while processing higher sample volumes.

Many laboratories pair the SG504 with CO₂ incubators for mammalian cell culture, refrigerated centrifuges for sample preparation, ultra-low temperature freezers for long-term specimen storage, laboratory refrigerators for media and reagent storage, compound and inverted microscopes for routine cell analysis, and laboratory autoclaves for sterilizing instruments and biological waste.

American Instrument Exchange offers a comprehensive inventory of professionally refurbished laboratory equipment, allowing laboratories to source multiple compatible instruments from one trusted supplier while reducing procurement lead times and simplifying laboratory expansion projects.

Common Applications

The Baker SG504 is designed for laboratories requiring a larger biological safety cabinet to support demanding research and production workflows.

Typical applications include:

• Mammalian cell culture

• Stem cell research

• Tissue engineering

• Pharmaceutical quality control

• Vaccine development

• Molecular biology

• Virology

• Microbiology

• Clinical diagnostics

• Gene therapy research

• Biopharmaceutical manufacturing support

• Biotechnology product development

• Academic and government research laboratories

Ideal Laboratory Environments

The SG504 is frequently selected by biotechnology companies, pharmaceutical manufacturers, university research laboratories, hospital pathology departments, public health laboratories, and contract research organizations that require additional workspace while maintaining Class II Type A2 biosafety protection.

Its larger interior dimensions make it especially well suited for laboratories handling higher sample throughput, larger culture vessels, or procedures requiring multiple pieces of equipment inside the work area. The combination of dependable airflow performance, energy-efficient operation, and ergonomic design allows the SG504 to support continuous daily operation in demanding research and production environments.

Key Specifications

Specifications compiled from Baker manufacturer literature, distributor technical references, and American Instrument Exchange product information.

What is the Baker SterilGARD e3 SG504 biosafety cabinet?

The Baker SterilGARD e3 SG504 is a Class II Type A2 biosafety cabinet designed to provide personnel, product, and environmental protection through controlled airflow and HEPA filtration. It meets NSF/ANSI 49 standards and is suitable for Biosafety Levels 1–3 applications including microbiology, virology, and pharmaceutical work.

If you’re not sure what type of biosafety cabinet you need – Type A2 or Type B2 – please contact either the sales team at American Instrument Exchange or the technicians at AIE Laboratory Services for more information and guidance.

How does the airflow system in the SG504 work?

Like all Class II Type A2 biosafety cabinet, the Baker SG504 uses a vertical laminar airflow system with a carefully balanced recirculation pattern:

• Room air enters at ~100–105 feet per minute through the front opening
• HEPA-filtered air flows downward in a unidirectional stream
• ~70% of air is recirculated; ~30% is exhausted through a HEPA filter
• A momentum air curtain and high-velocity return slots enhance containment

This design ensures contaminants are captured while maintaining a sterile work area.

What level of filtration does the SG504 provide?

The cabinet uses dual HEPA filters (supply and exhaust) that are:

• 99.99% efficient at 0.3 microns (most penetrating particle size)
• Individually leak-tested before shipment
• Designed for both product and environmental protection

This level of filtration is critical for maintaining sterile conditions in sensitive lab workflows.

What makes the SterilGARD e3 series unique compared to other biosafety cabinets?

The SG504 and other Baker x04 biosafety cabinets incorporate several proprietary technologies, including:

• StediFLOW™ airflow system for consistent performance as filters load
• UniPressure™ plenum design for stable airflow balance
• Momentum air curtain for improved operator protection
• High-velocity return air slots to capture contaminants quickly

These features work together to improve containment, reduce turbulence, and simplify certification.

How energy efficient is the SG504 biosafety cabinet?

The SterilGARD e3 platform is engineered for low energy consumption and reduced operating costs, offering:

• Significant reductions in energy use compared to traditional cabinets
• Lower heat output, improving lab comfort
• Extended HEPA filter life due to optimized airflow

Some configurations report substantial annual energy savings due to efficient motor and airflow control systems.

Can the SG504 be ducted or used recirculating?

Yes. Like all Class II Type A2 cabinets, the SG504 can recirculate air back into the laboratory or connect to an external exhaust system via a canopy. This flexibility allows it to fit a wide range of lab designs and safety requirements.

What applications is the SG504 best suited for?

The SG504 is commonly used in cell and tissue culture, microbiology and virology labs,  clinical diagnostics, pharmaceutical and biotech research, and more. It is designed for applications requiring both contamination control and operator protection.

How easy is maintenance and certification?

The SterilGARD e3 is designed for simplified maintenance. Our repair technicians appreciate all of the features that make these units easy to maintain, including front-access HEPA filters for faster replacement, adjustable internal damper for airflow balancing, accessible components for certification testing. These features reduce downtime and service costs over the life of the cabinet.

Why buy a refurbished SG504 instead of new?

A professionally refurbished SG504 can deliver:

• Significant cost savings compared to new units
• Verified performance and tested airflow systems
• Faster availability vs. long OEM lead times

When properly refurbished, these cabinets provide equivalent functional performance at a fraction of the cost.

Why choose American Instrument Exchange instead of an auction or unknown seller?

Not all “used biosafety cabinets” are equal. Buying from a trusted supplier like American Instrument Exchange helps ensure:

• Verified HEPA filter integrity and airflow performance
• Proper decontamination and cleaning
• Functional alarms, controls, and safety systems
• Reduced risk of certification failure after delivery

In contrast, auction equipment is often sold untested, uncertified, and without safety validation, which can lead to costly repairs or compliance issues.