Keebio MT2500 Multi-Tube Vortex Mixer

Overview

The Keebio MT2500 Multi-Tube Vortex Mixer is an engineered solution for high-throughput sample homogenization in regulated and research-intensive laboratories. Utilizing a brushless DC motor coupled with precision-machined eccentric drive mechanics, the instrument generates consistent horizontal circular oscillation—distinct from vertical vortexing—to induce controlled turbulent mixing across multiple samples simultaneously. This horizontal 4 mm amplitude motion ensures uniform energy transfer without excessive shear or tube tipping, making it especially suitable for delicate biological suspensions, enzymatic reactions, cell lysates, and reagent reconstitution where reproducible dispersion is critical. Designed for continuous-duty operation in QC, clinical diagnostics, and academic core facilities, the MT2500 supports traceable, repeatable mixing protocols under ambient laboratory conditions (15–30°C, <80% RH).

Key Features

• Simultaneous processing of up to 50 individual tubes (e.g., 1.5 mL, 2.0 mL, or 15 mL conical tubes) using standardized, interchangeable foam holders—each calibrated for mechanical stability and minimal cross-contamination risk.
• Dual-parameter digital LCD display showing real-time rotational speed (rpm) and remaining timer duration; programmable timer spans 1 minute to 99 hours and 59 minutes with auto-shutdown functionality.
• Brushless DC motor architecture delivers maintenance-free operation over >20,000 hours MTBF, eliminating carbon brush wear and ensuring stable torque output across the full 500–2500 rpm range.
• Modular platform accommodates up to four standard microtiter plates (96-well or 384-well formats), enabling parallel mixing in ELISA, high-throughput screening (HTS), and assay development workflows.
• Acoustically signaled end-of-run alert (adjustable beep tone) ensures operator awareness without visual monitoring; aluminum chassis provides structural rigidity, thermal dissipation, and ESD-safe grounding.
• Microprocessor-controlled feedback loop maintains speed accuracy within ±10 rpm tolerance, independent of load variation or line voltage fluctuation (100–230 V AC input).

Sample Compatibility & Compliance

The MT2500 supports a broad range of common labware through its standardized foam insert system (STV-B01 to STV-B06 series), covering tube diameters from 10 mm to 29 mm and plate formats compliant with ANSI/SLAS standards. All foam inserts are autoclavable (up to 121°C, 20 min) and chemically resistant to common solvents (e.g., ethanol, isopropanol, dilute acids/bases). The device meets CE Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), conforms to IEC 61010-1:2010 for safety in laboratory equipment, and is RoHS 2011/65/EU compliant. While not certified for ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, its deterministic timer, non-volatile parameter storage, and auditable run logs (via optional RS-232/USB interface firmware upgrade) support integration into GLP- and GMP-aligned validation protocols.

Software & Data Management

The base MT2500 operates as a standalone instrument with embedded firmware managing all timing, speed regulation, and alarm functions. For laboratories requiring electronic record retention, optional firmware upgrades enable serial communication (RS-232 or USB virtual COM port) to transmit start/stop timestamps, setpoints, and runtime data to LIMS or ELN systems. Audit trail generation—including user ID, parameter changes, and execution status—is achievable when paired with validated third-party data acquisition software compliant with 21 CFR Part 11 requirements. No proprietary cloud platform or vendor-hosted software is required or bundled.

Applications

• Cell culture work: Resuspension of adherent or suspension cells prior to passaging or cryopreservation.
• Molecular biology: Homogenization of PCR master mixes, restriction digests, and ligations prior to thermocycling.
• Clinical microbiology: Uniform dispersion of bacterial colonies in broth for MIC determination or MALDI-TOF sample prep.
• Protein biochemistry: Gentle reconstitution of lyophilized enzymes or antibodies without denaturation.
• Quality control labs: Batch-wise mixing of reference standards, calibrators, and controls for immunoassays and HPLC sample prep.
• Biopharma upstream processing: Pre-harvest mixing of bioreactor harvests for consistent sampling and turbidity normalization.

FAQ

Is the MT2500 suitable for mixing viscous solutions such as glycerol stocks or agarose gels?
Yes—its brushless motor delivers high starting torque and sustained low-speed stability, enabling effective dispersion of moderately viscous media (up to ~1000 mPa·s) at speeds ≥1200 rpm. For highly viscous samples (>5000 mPa·s), extended run times or pre-dilution is recommended.
Can the timer be paused or adjusted mid-run?
No—the timer is non-interruptible during active operation to ensure protocol integrity; however, users may abort and restart with modified parameters without hardware reset.
Are replacement foam holders available as consumables?
Yes—STV-Bxx modules are stocked globally as field-replaceable parts with batch-specific certificates of conformance; each holder is serialized for traceability in regulated environments.
Does the unit include calibration documentation?
A factory-verified speed calibration report (traceable to NIST-traceable tachometer standards) is provided with each shipment; annual verification can be performed using external optical tachometry per ISO/IEC 17025 guidelines.
What is the expected service life under continuous 8-hour daily operation?
Based on accelerated life testing, the brushless motor and drive train are rated for ≥5 years of uninterrupted 8-hr/day use at 2000 rpm average load, with no scheduled maintenance required beyond periodic cleaning of the platform surface and foam inserts.