Eppendorf Innova 44/44 R Floor-Standing and Stackable Temperature-Controlled Orbital Shaker

Overview

The Eppendorf Innova 44/44 R is a high-performance, floor-standing orbital shaker engineered for precision temperature control and reproducible agitation in microbiological, cell culture, and fermentation applications. Designed with a robust air-jacketed thermal architecture, it delivers uniform chamber temperature distribution and stable orbital motion across extended operational durations. Its core drive mechanism—the Triple-Eccentric Counterbalanced Drive—ensures low-vibration, high-torque performance at all speeds (25–400 rpm), minimizing mechanical stress on sensitive cultures while maintaining long-term rotational stability. The Innova 44 R variant integrates active refrigeration, enabling sub-ambient operation down to 4 °C—critical for cold-adapted strain maintenance, enzyme kinetics studies, or low-temperature bioprocess development. Unlike benchtop alternatives, its modular stackable configuration supports up to three units vertically aligned, reducing footprint by up to 67% without compromising internal volume or thermal integrity.

Key Features

• Triple-Eccentric Counterbalanced Drive system for vibration-damped, high-reproducibility orbital motion across full speed range
• Programmable controller supporting up to four independent protocols, each with 15 sequential steps—including ramped temperature profiles, speed transitions, and timed activation of optional UV germicidal lamps or programmable lighting modules (Innova 44 R only)
• Front-access pull-out electronics and HVAC module for simplified serviceability and GLP-compliant preventive maintenance
• Large internal chamber accommodating up to 5 L flasks; integrated interior LED illumination for real-time visual monitoring
• Dual-layer tempered glass lid with high-efficiency thermal insulation and unobstructed optical access
• Humidity-retaining fluid reservoir tray with integrated drainage channel—reduces sample evaporation and protects internal components from liquid ingress
• RS-232 serial interface compliant with standard laboratory data acquisition systems; supports remote logging, parameter adjustment, and alarm triggering via Eppendorf LabManager or third-party SCADA platforms
• Durable door gasket design ensuring consistent thermal sealing and chamber homogeneity per ISO 13485 environmental validation requirements

Sample Compatibility & Compliance

The Innova 44/44 R accommodates standard microbiology and bioprocessing vessels—including Erlenmeyer flasks (up to 5 L), baffled bottles, multi-well plates (with compatible platform adapters), and custom bioreactor vessels mounted on universal clamping fixtures. Its orbital motion profile (25–400 rpm, selectable 2.5 cm or 5.1 cm orbit diameter) aligns with ASTM D4064 (standard test method for orbital shaker performance verification) and supports protocols referenced in USP (cell culture process characterization). Refrigerated operation (Innova 44 R) meets ICH Q5D requirements for cold-chain biologics storage validation. All firmware and control logic comply with FDA 21 CFR Part 11 for electronic records and signatures when used with audit-trail-enabled software environments.

Software & Data Management

The shaker’s embedded controller stores protocol history with timestamped event logs (start/stop, temperature setpoint changes, speed adjustments, door openings). When connected via RS-232 to validated laboratory information management systems (LIMS) or Eppendorf’s LabManager v4.x+, it enables automated export of CSV-formatted runtime datasets—including real-time temperature deviation alerts, cumulative motor runtime, and thermal stabilization metrics. Audit trail functionality captures user ID, action type, and timestamp for every configuration change, satisfying GLP/GMP documentation standards. Optional remote alarm outputs support integration into facility-wide building management systems (BMS) for critical condition escalation.

Applications

• Microbial growth optimization and batch cultivation of E. coli, S. cerevisiae, and filamentous fungi under controlled oxygen transfer conditions
• Cell line expansion and suspension culture of CHO, HEK293, and hybridoma cells in serum-free media
• Protein expression screening across temperature gradients (e.g., 18–37 °C induction studies)
• Enzymatic assay development requiring precise thermal and agitation control (e.g., lipase activity assays at 4–25 °C)
• Environmental microbiology workflows involving psychrophilic isolates or low-temperature biodegradation studies
• Preparation of homogeneous suspensions for downstream analytical techniques including HPLC sample prep, flow cytometry staining, and qPCR template normalization

FAQ

What is the minimum operating temperature for the Innova 44 R?
The Innova 44 R achieves a verified minimum chamber temperature of 4 °C, enabled by compressor-based refrigeration and insulated air-jacket construction.
Can multiple Innova 44 units be stacked safely without performance loss?
Yes—up to three units may be mechanically interlocked using factory-supplied stacking kits; thermal crosstalk and vibration transmission are mitigated via isolation gaskets and independent drive calibration per unit.
Is the RS-232 interface compatible with modern Windows/Linux-based lab software?
Yes—standard ASCII command protocol (Eppendorf Shaker Command Set v2.1) is supported; drivers and Python SDKs are available through Eppendorf Technical Support Portal.
Does the humidity tray require periodic refilling during long-term runs?
Yes—the reservoir must be filled before initiating runs exceeding 24 hours; capacity supports ~72 h of continuous operation at 37 °C/80% RH.
Are platform adapters available for microtiter plates or roller bottles?
Yes—Eppendorf offers certified accessories including 96-well plate carriers (PN 0030 120.024), roller bottle cradles (PN 0030 120.025), and custom-machined flask holders compliant with ISO 8573-1 purity class 4 for sterile applications.