LAUDA Varioshake VS 45 OI Orbital Incubator Shaker

Overview

The LAUDA Varioshake VS 45 OI is a precision-engineered orbital incubator shaker designed for reproducible, long-term cell culture, microbial growth, enzyme assays, and biochemical reaction monitoring under tightly controlled thermal and mechanical conditions. Built upon LAUDA’s legacy of German-engineered thermal management systems, this instrument integrates a robust orbital shaking mechanism with high-fidelity temperature regulation in a 45 L stainless steel chamber. Its core operating principle relies on uniform orbital motion—25 mm amplitude at 20–250 rpm—combined with active air circulation and PID-controlled heating (and optional external cooling integration) to maintain temperature stability within ±0.2 °C across the entire working volume. Unlike basic benchtop shakers, the VS 45 OI features a dual-shelf architecture supporting two independently loadable trays, enabling parallel experiments with differentiated vessel configurations—while preserving consistent thermal homogeneity and mechanical consistency regardless of load distribution.

Key Features

• Orbital shaking motion with precise 25 mm amplitude and digitally adjustable speed (20–250 rpm), ensuring uniform suspension and oxygen transfer for aerobic cultures.
• PID-based microprocessor temperature control with 0.1 °C resolution and ±0.2 °C stability over the full 28–70 °C operating range (extendable to 20 °C with external chiller connection).
• Dual stainless steel shelves (420 × 270 mm each) with configurable mounting options—compatible with LAUDA Hydro water bath accessories including universal clamps, adhesive pads (A000041), oscillating trays (A000046), and vessel-specific holders for Erlenmeyer flasks, test tubes, Petri dishes, and separatory funnels.
• Full-function LED interface with intuitive membrane keypad: real-time display of setpoint/actual temperature, remaining time, and operational status; programmable upper/lower temperature alarms with optical and acoustic alerts.
• Integrated safety architecture: automatic shutdown of both heating and shaking upon door opening; independent electromechanical temperature limiter; motor overload protection; and internal LED illumination for sample observation without thermal disturbance.
• RS232 serial interface for remote parameter logging, protocol synchronization, and integration into laboratory automation frameworks compliant with GLP/GMP data integrity requirements.
• Compact, vibration-damped chassis with dynamic mass-balancing system—ensures low-noise operation and minimal cross-talk between adjacent instruments in shared incubator suites or core facilities.

Sample Compatibility & Compliance

The VS 45 OI accommodates standard laboratory vessels up to 5 L capacity per shelf (e.g., 2 × 2.5 L flasks or 4 × 1 L flasks), with optimized airflow distribution validated per ISO 13408-1 for aseptic processing environments. Its stainless steel interior, non-porous door liner, and seamless chamber construction support routine decontamination using ethanol, hydrogen peroxide vapor (HPV), or approved sporicidal agents—meeting requirements for ISO 14644-1 Class 7 cleanroom-adjacent installations. While not certified as an ISO Class 5 biosafety cabinet, its design aligns with ASTM E2500-13 guidance for verification of environmental control equipment used in biopharmaceutical process development. The instrument complies with IEC 61010-1:2010 for electrical safety and EN 60335-1 for household and similar electrical appliances—ensuring suitability for continuous unattended operation in regulated QC/QA laboratories.

Software & Data Management

Equipped with factory-calibrated firmware supporting RS232 ASCII command protocol, the VS 45 OI enables bidirectional communication with third-party LIMS or ELN platforms. Time-stamped temperature and timer logs can be exported for audit trails meeting FDA 21 CFR Part 11 requirements when paired with validated software clients. Optional LAUDA LabSoft Connect modules provide enhanced graphical trending, alarm history export (CSV), and multi-device fleet monitoring—supporting retrospective analysis for root cause investigations during method validation or deviation reporting. All parameter changes are logged with user ID (if integrated with network authentication), timestamp, and pre-/post-change values—fulfilling ALCOA+ data integrity principles.

Applications

• High-yield recombinant protein expression in E. coli and yeast cultures requiring precise dissolved oxygen control via orbital agitation.
• Microbial kinetics studies under defined thermal stress (e.g., heat shock response at 42 °C or cold adaptation at 25 °C).
• Enzyme immobilization and biocatalysis screening where substrate mixing efficiency directly impacts reaction rate linearity.
• Cell-based assay development for oncology or immunology research—enabling scalable suspension culture expansion prior to downstream flow cytometry or qPCR analysis.
• Stability testing of biologics formulations under accelerated conditions (e.g., 40 °C/75% RH simulated environments when paired with humidity-controlled enclosures).

FAQ

What is the maximum flask size supported on each shelf?
The VS 45 OI accommodates vessels up to 150 mm in height on both shelves simultaneously. For taller containers (>150 mm), only one shelf may be loaded to ensure clearance and airflow integrity.
Can the instrument operate below ambient temperature?
Yes—when connected to an external chiller via the integrated cooling coil port, the operating range extends down to 20 °C. Chiller specifications must meet LAUDA’s minimum flow rate and temperature differential requirements.
Is the RS232 interface compatible with modern Windows/macOS systems?
Yes—using a USB-to-RS232 adapter and standard terminal emulation software (e.g., Tera Term or PuTTY), users can establish reliable serial communication without proprietary drivers.
How is temperature uniformity verified across the chamber?
LAUDA provides a factory-issued temperature mapping report (per ISO/IEC 17025-accredited procedures) documenting spatial variance at nine predefined points under loaded conditions at 37 °C and 55 °C.
Are spare parts and calibration services available globally?
All consumables—including adhesive pads (A000041), oscillating trays (A000046), and sensor assemblies—are stocked by LAUDA’s regional service centers in North America, EMEA, and APAC, with traceable calibration certificates issued per ISO/IEC 17025 standards.