EYELA FDL-1000 & FDL-2000 Benchtop Freeze Dryers

Overview

The EYELA FDL-1000 and FDL-2000 are benchtop freeze dryers engineered for reproducible lyophilization of heat-sensitive biologicals, pharmaceuticals, and analytical standards under controlled low-temperature vacuum conditions. Based on the principle of sublimation—where ice transitions directly from solid to vapor phase below the triple point of water—the systems utilize a dual-stage refrigeration architecture to maintain cold trap temperatures down to −80 °C (FDL-2000) or −45 °C (FDL-1000), ensuring efficient condensation of water vapor and stable primary drying conditions. Designed and manufactured in Japan, these units comply with RoHS Directive 2011/65/EU and integrate fail-safe electrical protections aligned with IEC 61010-1 safety requirements for laboratory equipment. Their modular configuration supports manifold, flask, and bulk tray drying modes, making them suitable for both R&D-scale process development and QC batch processing in regulated environments.

Key Features

• High-visibility 3.4-inch TFT LCD interface with intuitive membrane keypad navigation for parameter setting, real-time monitoring, and system status feedback
• Intelligent auto-mode logic that evaluates cold trap temperature and vacuum level to confirm proper sample vessel installation—reducing operator error during manifold-based loading
• Dual-refrigerant cooling system (R404A/R23) in the FDL-2000 model enables deeper cold trap operation and enhanced condensation efficiency for high-moisture or volatile solvents
• Integrated Pirani vacuum gauge with digital readout (0.0–533 Pa) provides continuous, traceable pressure monitoring compatible with GLP documentation workflows
• Automatic venting function activated upon vacuum release prevents thermal shock and sample collapse during chamber opening
• 0.2 µm hydrophobic inlet filter safeguards samples against particulate ingress during backfilling—critical for sterile or ultra-pure applications
• Power recovery timer allows configurable restart delay after grid interruption, mitigating risk of sample boil-over and structural damage
• Oil-sparing vacuum pump design isolates condensate drainage from the pump intake path, extending oil service intervals and reducing maintenance frequency

Sample Compatibility & Compliance

The FDL series accommodates standard 13–29 mm O.D. glass vials, serum bottles, and multi-port manifolds (up to 12 ports). The cold trap chamber (Ø200 × 300 mm, SUS304) is electropolished for corrosion resistance and ease of de-icing. Units meet ISO 14644-1 Class 5 cleanroom compatibility when operated with HEPA-filtered nitrogen backfill. All electrical subsystems conform to JIS C 61010-1 and UL 61010-1. Optional ice mass sensing (via capacitive probe) enables endpoint detection for automated cycle termination—supporting USP <1211> and Ph. Eur. 2.9.40 lyophilization validation requirements. Data output via analog signal (0–5 V or 4–20 mA) facilitates integration with external chart recorders or LIMS platforms compliant with FDA 21 CFR Part 11 audit trail specifications.

Software & Data Management

While the FDL series operates via embedded firmware without PC-dependent software, its analog data outputs (vacuum pressure, cold trap temperature, elapsed time) support third-party acquisition systems for full-cycle trending and electronic batch record generation. Built-in timer functions log cumulative vacuum pump runtime and total lyophilization duration—enabling predictive maintenance scheduling per ISO 13485 clause 7.5.3. The control panel’s self-diagnostic routine performs periodic verification of sensor calibration, relay integrity, and compressor thermistor response, generating fault codes accessible via display menu for rapid troubleshooting. All operational parameters—including setpoints, alarms, and event timestamps—are retained in non-volatile memory across power cycles.

Applications

• Stabilization of monoclonal antibodies, vaccines, and enzyme preparations for long-term storage
• Preparation of reference standards in clinical chemistry and environmental testing laboratories
• Drying of microbial cultures and tissue extracts while preserving viability and antigenicity
• Removal of solvents (e.g., tert-butanol, ethyl acetate) from organic synthesis intermediates
• Lyophilization of HPLC fractions and MALDI matrix samples prior to mass spectrometry analysis
• Processing of botanical extracts and nutraceuticals where thermal degradation must be avoided

FAQ

What is the maximum allowable moisture load per 24-hour cycle?
The FDL-1000 supports up to 4 L of ice condensation per 24 hours; the FDL-2000 supports 3 L/24 h due to higher condenser surface area and lower operating temperature.
Can the unit be integrated into a GMP-compliant environment?
Yes—when equipped with optional analog data logging and paired with validated recording hardware, the system meets baseline requirements for IQ/OQ documentation and supports 21 CFR Part 11-compliant electronic records.
Is the cold trap drain port compatible with continuous condensate removal?
No—the drain is manual and intended for periodic ice melt evacuation; continuous removal requires external cold trap chillers or secondary condensation traps.
Does the system include vacuum pump?
No—vacuum pumps are selected separately based on required ultimate pressure and pumping speed; recommended models include oil-sealed rotary vane pumps rated ≥100 L/min at 50/60 Hz.
How is calibration verified for the Pirani gauge and temperature sensors?
Factory calibration certificates are provided; field verification can be performed using NIST-traceable reference gauges and PT100 calibrators per ASTM E2877-21 guidelines for lyophilizer sensor validation.