Eppendorf ThermoMixer F Compact Temperature-Controlled Vortex Mixer

Overview

The Eppendorf ThermoMixer F is a compact, benchtop temperature-controlled orbital shaker engineered for precision and reproducibility in molecular biology, biochemistry, and cell culture workflows. It integrates simultaneous heating and mixing via a thermally optimized SmartBlock heating module and a high-stability 2D orbital drive mechanism—operating on the principle of controlled horizontal circular motion at defined amplitude and frequency. Unlike conventional vortexers or water baths, the ThermoMixer F delivers uniform thermal distribution across sample vessels while maintaining mechanical homogeneity during agitation. Its design eliminates thermal gradients common in block-based heaters and avoids condensation-related sample loss through active thermal management of the lid interface. The instrument operates within a calibrated temperature range from +4 °C to 100 °C above ambient, supporting protocols requiring strict thermal fidelity—including enzymatic incubations, nucleic acid denaturation, and protein digestion—without external accessories or auxiliary equipment.

Key Features

• 2DMix-Control technology: Dual-axis orbital motion ensures consistent, low-shear mixing across all tube formats—eliminating vortex-induced stratification and minimizing bubble formation.
• condens.protect® ThermoTop: Actively heated lid maintains surface temperature just below dew point to suppress condensation inside tube caps—critical for preserving reaction volume integrity and preventing cross-contamination.
• SmartBlock modular heating system: Precision-machined aluminum blocks with vessel-specific geometry ensure optimal thermal contact and rapid heat transfer; edge insulation prevents operator contact burns during operation.
• Dedicated preset buttons: One-touch activation of commonly used temperatures (37 °C, 42 °C, 56 °C, 95 °C) enables rapid protocol initiation without manual parameter entry—reducing setup time and human error.
• Independent control of temperature and mixing: Users may operate heating only, shaking only, or synchronized thermo-mixing—providing full experimental flexibility for optimization studies or multi-step assays.
• Acoustically dampened drive assembly: Low-noise motor and vibration-isolated platform ensure stable operation even at maximum speed (2000 rpm for F0.5/FP configurations), suitable for shared lab environments.

Sample Compatibility & Compliance

The ThermoMixer F supports standardized consumables including Eppendorf LoBind and PCR-grade tubes (0.5 mL, 1.5 mL, 2.0 mL), 96-well microplates, and deep-well plates (e.g., 2 mL round-bottom). All SmartBlocks are traceably calibrated per ISO/IEC 17025 requirements and comply with DIN EN 61000-6-3 (EMC) and DIN EN 61000-6-2 (immunity). The instrument meets essential safety standards under IEC 61010-1 for laboratory electrical equipment. While not certified for GMP production environments, its audit-ready temperature logging (via optional USB export) and repeatable performance support GLP-aligned workflows, including those referenced in USP , ISO 13485 Annex A.3, and ASTM E2927-13 for thermal validation of incubation devices.

Software & Data Management

The ThermoMixer F operates via an embedded microcontroller with non-volatile memory storing up to 10 user-defined protocols. Real-time temperature and speed values are displayed on a high-contrast OLED screen with backlight. Time, temperature, and rpm parameters are logged internally with timestamping; data can be exported via USB-A port to CSV-compatible spreadsheets for traceability. No proprietary software installation is required. The device supports 21 CFR Part 11-compliant documentation when paired with validated third-party LIMS or ELN systems—enabling electronic signature capture, change tracking, and secure audit trails for regulated labs performing QC testing or method development.

Applications

• Bacterial and yeast cultivation: Precise maintenance of sub-critical temperatures (e.g., 30 °C) during liquid culture growth phases.
• Enzymatic reactions: Stable incubation at 37 °C or 56 °C for restriction digests, ligations, phosphorylations, and dephosphorylations.
• Plasmid transformation: Heat-shock protocols (42 °C for 45 s) combined with immediate post-shock mixing to enhance membrane fluidity and DNA uptake.
• Nucleic acid denaturation: Controlled 95 °C exposure for dsDNA melting prior to hybridization or sequencing library prep.
• Proteinase K digestion: Simultaneous 56 °C heating and 1200 rpm mixing for efficient tissue lysis and chromatin shearing in ChIP or FFPE workflows.
• ELISA and immunoassays: Uniform reagent dispersion across microplate wells without splashing or well-to-well carryover.
• Reconstitution and resuspension: Gentle yet effective redispersion of lyophilized enzymes, antibodies, or synthetic oligonucleotides.

FAQ

Can the ThermoMixer F be used for overnight incubations?
Yes—the instrument supports continuous operation for up to 99 hours and 59 minutes with automatic shutdown or hold-at-temperature modes.
Is calibration documentation available for ISO audits?
Each unit ships with a factory calibration certificate; annual recalibration services are offered by Eppendorf-certified service centers with traceable NIST references.
Does the device support external temperature probes?
No—temperature sensing is internal to the SmartBlock; however, block calibration verification can be performed using external PT100 probes per ISO 80601-2-80.
What maintenance is required?
Routine cleaning of the SmartBlock surface with 70% ethanol; no lubrication or internal servicing is needed under normal use conditions.
Can multiple ThermoMixer F units be networked or controlled centrally?
Not natively—the device lacks Ethernet or Wi-Fi connectivity; centralized control requires integration via RS-232 or USB-serial gateways using custom scripting.