IKA KS 4000i Controlled-Temperature Orbital Shaker

Overview

The IKA KS 4000i Controlled-Temperature Orbital Shaker is an engineered platform for precise, reproducible incubation and mixing of biological and biochemical samples under tightly regulated thermal conditions. Designed for demanding life science laboratories—including molecular biology, microbiology, cell culture, and protein expression workflows—the instrument combines orbital shaking mechanics with integrated PID-based temperature control. Its circular motion (20 mm orbit diameter) ensures uniform suspension of cultures, suspensions, and reagents without vortexing or shear-induced damage. Unlike ambient-only shakers, the KS 4000i maintains stable chamber temperatures from RT +5 °C up to 80 °C using dual PT1000 resistance thermometers for high-fidelity feedback—critical for enzyme kinetics studies, bacterial growth profiling, and solubility screening where thermal consistency directly impacts assay validity.

Key Features

• Integrated dual-sensor PID temperature control system with ±0.1 K stability (measured in 0.2 L water at 37 °C), enabling high-reproducibility incubation across extended durations.
• Wide-speed orbital drive (10–500 rpm) with electronic speed regulation and LED digital display for real-time monitoring and fine-tuned protocol optimization.
• Full-function timer (1–59,940 min, configurable in minutes or hours) supporting both timed and continuous operation modes—ideal for overnight cultures or multi-day kinetic assays.
• Safety-integrated design: automatic motor shutdown upon lid opening and excessive vibration detection; built-in drain port for containment of accidental spills into the collection tray.
• Antimicrobial-coated control panel surface compliant with ISO 22196:2011 standards for microbial reduction on polymer surfaces—reducing cross-contamination risk in shared core facilities.
• RS232 serial interface for external communication and remote parameter logging, compatible with IKA’s labworldsoft® software suite for audit-ready data capture.
• Robust mechanical architecture rated for continuous 100 % duty cycle operation and maximum load capacity of 20 kg (including clamps and vessels).

Sample Compatibility & Compliance

The KS 4000i accommodates standard laboratory vessels including Erlenmeyer flasks (up to 5 L), baffled flasks, test tubes, and custom-mounted reactors. It is not designed for microplate formats (e.g., 96-well plates), nor does it support vacuum or pressurized chamber configurations. All electrical and mechanical components comply with CE marking requirements under the Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU). The IP30 ingress protection rating confirms suitability for typical laboratory environments with non-condensing humidity ≤80 % RH and ambient temperatures between 15–32 °C. For GLP- or GMP-regulated environments, the RS232 interface supports traceable parameter logging when used with validated labworldsoft® configurations compliant with FDA 21 CFR Part 11 requirements for electronic records and signatures.

Software & Data Management

The KS 4000i operates as a node within IKA’s labworldsoft® ecosystem—a modular laboratory software platform supporting instrument configuration, real-time monitoring, and secure data archiving. Through RS232 connectivity, users can remotely set speed, temperature, and timer parameters; initiate/stop runs; and export timestamped operational logs (including setpoints, actual values, and error flags) in CSV or XML format. Audit trails include user ID, session timestamps, and change history—essential for quality assurance documentation and regulatory submissions. While the device itself does not store historical data internally, its deterministic command-response protocol ensures synchronization fidelity during multi-instrument protocols.

Applications

• Bacterial and yeast cultivation under controlled aeration and thermal profiles for bioprocess development.
• Protein solubilization and refolding studies requiring simultaneous agitation and precise temperature ramping.
• Enzyme activity assays where reaction rates are highly temperature-sensitive (e.g., kinases, phosphatases, dehydrogenases).
• Cell lysis optimization via mechanical agitation combined with controlled thermal denaturation.
• Media preparation and homogenization prior to sterilization or filtration steps.
• Long-term stability testing of formulations under accelerated aging conditions (e.g., 40 °C/75 % RH equivalent thermal stress).

FAQ

Is the KS 4000i suitable for use with microplates?
No. This unit is engineered for flask- and tube-based agitation and lacks the platform geometry, clamping mechanism, and low-amplitude motion required for microplate compatibility.
Can the instrument be operated inside a CO₂ incubator?
No. The KS 4000i is not rated for humidified or CO₂-enriched atmospheres. Its IP30 enclosure and heating system are intended for standard ambient lab environments only.
Are clamps included with the base unit?
No. All vessel-specific clamps—including universal flask holders, tube racks, and custom fixtures—are optional accessories and must be ordered separately based on vessel dimensions and application needs.
Does the device support temperature ramping or gradient protocols?
No. The KS 4000i provides static temperature setpoint control only. It does not feature programmable ramping or multi-step thermal profiles.
What validation documentation is available for GxP environments?
IKA provides IQ/OQ documentation templates and calibration certificates for PT1000 sensors and speed verification. Full PQ execution requires site-specific protocol development aligned with internal SOPs and regulatory expectations (e.g., USP , ISO/IEC 17025).