IKA Loopster Digital Rotating Mixer

Overview

The IKA Loopster Digital Rotating Mixer is a precision-engineered laboratory device designed for gentle yet effective homogenization of biological and chemical samples through controlled orbital rotation. Unlike conventional shakers relying on linear or elliptical motion, the Loopster employs a true rotating platform architecture—generating consistent, low-shear angular displacement ideal for sensitive applications such as blood sample mixing, reagent resuspension, and cell culture maintenance. Its core operating principle centers on continuous, programmable rotational motion with variable tilt angle (0° to 90°), enabling users to optimize mixing efficiency based on sample viscosity, container geometry, and sedimentation behavior. Engineered in Germany and compliant with DIN EN 60529 (IP21 ingress protection), the instrument delivers high reproducibility in ambient lab environments ranging from 4 °C to 50 °C—making it suitable for use inside refrigerated rooms or near incubators without performance compromise.

Key Features

• Precisely adjustable rotational speed from 5 to 80 rpm in 1-rpm increments, displayed via high-contrast 7-segment LED readout
• Programmable tilt-angle platform (0°–90°) to accommodate diverse mixing dynamics—from gentle swirling to vigorous vortexing-like motion
• Extended timer range: 1 second to 5999 minutes (99 h 59 min), supporting both countdown operation and continuous runtime modes
• Robust aluminum alloy housing and balanced motor assembly ensure vibration-free operation at all speeds, even under full 2 kg load (including clamps and vessels)
• Chemically resistant, autoclavable accessories—including universal tube holders and custom-fit adapters for tubes ranging from 4 mL to 50 mL—facilitate rapid setup and cleaning
• Compliance with international safety standards (IEC 61010-1) and electromagnetic compatibility (EMC) directives ensures reliable integration into regulated laboratory workflows

Sample Compatibility & Compliance

The Loopster supports a broad spectrum of primary and secondary containment formats, including conical centrifuge tubes (15 mL, 50 mL), microcentrifuge tubes (0.5–2.0 mL), PCR strips, and small-volume vials. Its modular accessory system allows secure fixation of asymmetric or irregularly shaped containers without slippage. All contact surfaces are compatible with common laboratory solvents and disinfectants (e.g., 70% ethanol, sodium hypochlorite solutions). The device operates within ISO 13485-aligned manufacturing processes and meets essential requirements of the EU Medical Device Regulation (MDR 2017/745) when used in diagnostic sample preparation. While not classified as a medical device itself, its design supports GLP-compliant documentation practices through unambiguous parameter logging and repeatable protocol execution.

Software & Data Management

The Loopster operates as a standalone instrument without embedded firmware-based data logging or external connectivity (no USB, RS232, or analog output interfaces). All operational parameters—including set speed, tilt angle, elapsed time, and remaining timer duration—are locally displayed and retained during power cycling. For laboratories requiring audit-trail capability, manual recording of settings is recommended per SOPs aligned with FDA 21 CFR Part 11 Annex 11 principles. Users may integrate the Loopster into broader digital lab ecosystems via external environmental monitoring systems or electronic lab notebooks (ELNs) using standardized timestamped protocols. Future firmware upgrades are not supported; however, mechanical longevity is assured by IKA’s industrial-grade brushless DC motor and sealed bearing construction rated for >20,000 hours of continuous service.

Applications

• Blood bank operations: Uniform mixing of anticoagulated whole blood prior to hematocrit analysis or component separation
• Clinical microbiology: Resuspension of bacterial pellets post-centrifugation without cell lysis
• Molecular diagnostics: Homogenization of nucleic acid extraction buffers with silica-membrane columns or magnetic beads
• Pharmaceutical QC: Reconstitution of lyophilized reference standards and stability-indicating dilutions
• Cell biology labs: Gentle agitation of suspension cultures during transient transfection or cytokine stimulation assays
• Environmental testing: Extraction of analytes from solid-phase matrices using solvent rotation-based leaching protocols

FAQ

Is the Loopster suitable for use inside a cold room at 4 °C?
Yes—the instrument is explicitly rated for operation between 4 °C and 50 °C, with condensation-resistant electronics and thermal-stable motor windings.
Can multiple Loopster units be stacked vertically to save bench space?
No—stacking is not supported due to structural design and heat dissipation requirements; each unit requires dedicated horizontal surface area.
Does the device support GMP-compliant electronic record keeping?
Not natively; it lacks digital output interfaces. However, its deterministic behavior and stable parameter retention enable full traceability when paired with procedural documentation per ALCOA+ principles.
What is the maximum permissible load on the rotating platform?
The platform supports up to 2 kg total mass, inclusive of fixtures, tubes, and sample volume—verified under worst-case eccentric loading conditions.
Are replacement accessories available for non-standard tube sizes?
Yes—IKA offers optional adapter kits for 0.2 mL PCR tubes, 100 mm Petri dishes, and multi-well plates (6-/12-/24-well), all engineered to maintain center-of-gravity alignment during rotation.