Lianhua LH-OM20 Mini Vortex Mixer

Overview

The Lianhua LH-OM20 Mini Vortex Mixer is an engineered solution for precise, low-volume liquid homogenization in life science laboratories. Utilizing controlled orbital vortex motion driven by a brushless DC motor, the device generates consistent, reproducible agitation across microcentrifuge tubes (0.2–2.0 mL), PCR tubes, and small-diameter colorimetric tubes (up to 15 mL). Unlike conventional shakers or orbital mixers, the LH-OM20 employs high-frequency, low-amplitude circular motion optimized for viscous or density-heterogeneous samples—enabling rapid dispersion of reagents, resuspension of pellets, and uniform mixing without splashing or foaming. Its compact footprint (120 × 100 × 105 mm) and lightweight construction (≤1.2 kg) make it suitable for biosafety cabinets, cold rooms, laminar flow hoods, and mobile lab setups where spatial constraints and operational quietness are critical.

Key Features

• Brushless DC motor with imported precision bearings ensures long-term rotational stability, minimal thermal drift, and acoustic output <45 dB(A) at 1 m—ideal for shared lab environments requiring low ambient noise.
• Dual-mode operation: continuous mode for sustained homogenization; pulse (touch-activated) mode for precise, on-demand agitation—eliminating unnecessary motor wear during intermittent use.
• Ergonomic, low-profile platform with non-slip silicone mat and universal tube holder accommodates standard 0.2–15 mL conical and round-bottom tubes without adapters.
• Thermally stable ABS+PC housing with IP20-rated enclosure provides mechanical robustness and resistance to common laboratory solvents (e.g., 70% ethanol, isopropanol).
• No external calibration required; motor speed is factory-tuned to deliver optimal vortex formation across viscosity ranges typical of molecular biology buffers (1–20 cP), enzyme solutions, and glycerol-containing stocks.

Sample Compatibility & Compliance

The LH-OM20 supports routine handling of aqueous, buffered, and mildly organic solvent-based solutions used in nucleic acid extraction, ELISA preparation, cell lysis buffer equilibration, and antibody dilution workflows. It is compatible with polypropylene, polyethylene, and borosilicate glass tubes meeting ISO 8573-1 (purity class 4) and ASTM D4169 performance standards for container integrity under mechanical stress. While not classified as a medical device under FDA 21 CFR Part 820, the mixer complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and incorporates double-insulated power input with overcurrent protection. Its design facilitates cleaning validation per GLP Annex 15 requirements when used in regulated QC/QA environments.

Software & Data Management

As a standalone analog-controlled instrument, the LH-OM20 does not incorporate embedded firmware, wireless connectivity, or digital logging capabilities. This architecture eliminates cybersecurity vulnerabilities, reduces maintenance complexity, and ensures deterministic response latency—critical for time-sensitive protocols such as rapid reagent thawing or pre-PCR master mix homogenization. All operational parameters (mode selection, activation timing) are manually initiated and monitored by the user, supporting full auditability under ISO/IEC 17025 clause 7.7 (control of equipment) and USP guidelines for analytical instrument qualification. No software validation documentation is required, simplifying IQ/OQ execution in GMP-aligned laboratories.

Applications

• Resuspension of lyophilized enzymes, antibodies, and synthetic oligonucleotides in low-volume formats.
• Homogenization of viscous samples including glycerol stocks (15–50% v/v), agarose gel loading dyes, and protein A/G conjugates.
• Pre-analytical sample conditioning prior to spectrophotometric quantification (e.g., Nanodrop, Qubit) or capillary electrophoresis injection.
• Uniform mixing of multi-component reaction cocktails for isothermal amplification (LAMP, RPA) and CRISPR-based detection assays.
• Supporting ISO 15189-accredited clinical microbiology labs in standardized specimen processing workflows involving sputum digestants or blood culture additives.

FAQ

Is the LH-OM20 suitable for mixing samples containing magnetic beads?
Yes—its gentle yet consistent orbital motion prevents bead aggregation and maintains suspension integrity without damaging surface ligands.
Can the unit be operated inside a refrigerated environment (4 °C)?
Yes—the motor and electronics are rated for continuous operation between 4–40 °C and 20–80% RH (non-condensing), making it compatible with cold room installations.
Does the device meet CE or UKCA marking requirements?
It conforms to the essential health and safety requirements of the EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU; CE marking is applied following third-party notified body assessment.
What maintenance is required for long-term reliability?
No scheduled maintenance is needed; periodic wipe-down with 70% isopropanol and visual inspection of the silicone mat for wear are sufficient per manufacturer recommendations.
Is tube size adjustment manual or automatic?
Tube retention is passive and geometry-based—the platform’s recessed contour and friction-matched mat secure standard tube diameters without clamps or levers.