Erlab GreenFumeHood 3 / GFH 5300 Ductless Fume Hood

Overview

The Erlab GreenFumeHood 3 (GFH 5300) is a high-performance, recirculating ductless fume hood engineered for precision chemical containment and indoor air quality preservation in modern laboratories. Unlike conventional ducted hoods that exhaust conditioned air outdoors—resulting in significant HVAC energy loss—the GFH 5300 employs a closed-loop airflow architecture: ambient laboratory air is drawn through the work area, passed sequentially through pre-filters and the proprietary Unisorb multi-contaminant molecular filter, and returned as purified air to the room. This design operates on the principle of adsorption-based gas-phase filtration, leveraging tailored surface chemistry and optimized pore structure to capture volatile organic compounds (VOCs), acidic vapors, basic gases, and low-molecular-weight polar species—including challenging analytes such as formaldehyde, acetaldehyde, ammonia, hydrogen sulfide, and low-boiling ketones and alcohols. The system is not intended for use with radioactive materials, perchloric acid, or uncontained high-hazard particulates, and must be validated for each specific application per institutional safety protocols.

Key Features

• All-steel construction with epoxy-powder-coated finish for corrosion resistance and cleanability
• Integrated LED lighting delivering uniform 900 lux illumination at the work surface, with minimal heat emission and >50,000-hour service life
• Intelligent airflow monitoring system with real-time face velocity display (0.4–0.6 m/s operational range), audible/visual alarms for filter saturation or airflow deviation
• Unisorb filter cartridge—patented multi-layer composite media combining activated carbon, impregnated metal oxides, and chemisorptive polymers—validated to AFNOR NF X15-211 for breakthrough capacity and retention efficiency
• No external ductwork required; installation flexibility supports modular lab reconfiguration and retrofit into space-constrained or historic facilities
• Ergonomic sash design with counterbalanced vertical lift mechanism and optional digital position memory

Sample Compatibility & Compliance

The GFH 5300 is validated for routine handling of common laboratory reagents including acetone, ethanol, methanol, chloroform, hydrochloric acid (dilute), sodium hydroxide solutions, and mixed organic-acid systems. It is not rated for perchloric acid, nitric acid fumes, fluorinated compounds (e.g., HF), or pyrophoric substances. Filter performance data are generated under standardized challenge conditions per AFNOR NF X15-211, which specifies test protocols for breakthrough time, adsorption capacity, and dynamic removal efficiency across 18 representative chemical families. While the unit itself does not fall under FDA 21 CFR Part 11 requirements (as it is not a data-generating analytical instrument), its integrated sensor logs—including runtime hours, cumulative airflow volume, and alarm events—are timestamped and exportable for GLP-compliant recordkeeping when paired with Erlab’s optional DataLogger Pro software.

Software & Data Management

The GFH 5300 includes a built-in microcontroller with non-volatile memory for storing operational history: total runtime, filter usage duration, number of alarm events, and average face velocity over the last 72 hours. Optional DataLogger Pro (v3.2+) enables USB or Ethernet connectivity for automated CSV export, trend visualization, and integration into centralized lab asset management platforms. Audit trails include user-initiated filter reset confirmations with electronic signature fields compliant with ALCOA+ principles. No cloud storage is enabled by default; all data reside locally unless explicitly configured per institutional IT policy.

Applications

• Teaching laboratories requiring safe, low-infrastructure chemical demonstrations
• QC/QA labs performing routine titrations, sample prep, and reagent dispensing
• Pharmaceutical R&D environments where HVAC load reduction supports LEED certification goals
• University core facilities supporting multi-user access with configurable sash height presets
• Field-deployable mobile labs and temporary containment setups where duct installation is impractical

FAQ

What types of chemicals can the Unisorb filter effectively capture?
Unisorb demonstrates verified retention for VOCs (C1–C6 aliphatics, aromatics, oxygenates), inorganic acids (HCl, HNO₃ vapor), bases (NH₃, amines), and sulfur-containing compounds (H₂S, mercaptans), as confirmed by AFNOR NF X15-211 testing.
How often must the Unisorb filter be replaced?
Filter service life depends on chemical class, concentration, exposure duration, and airflow profile; typical replacement intervals range from 6–24 months under standard academic lab usage—monitored via real-time saturation algorithm and visual indicator.
Is the GFH 5300 suitable for use with nanomaterials or biological aerosols?
No. This unit is designed exclusively for gaseous and vaporous contaminants. Particulate control requires supplemental HEPA or ULPA filtration; Erlab offers hybrid configurations (e.g., GreenFumeHood Bio) for combined chemical/biological applications.
Does the hood require external ventilation or make-up air systems?
No. As a fully recirculating system, it operates independently of building HVAC infrastructure—though ambient room air exchange rates must meet local health code minimums (typically ≥6 ACH) to prevent CO₂ buildup.
Can the unit be integrated into a laboratory BMS?
Yes. Modbus RTU and BACnet MS/TP interfaces are available via optional communication module for status polling, remote alarm notification, and energy consumption tracking within enterprise building management systems.