Hanuo HN-LZ6 Liquid-Liquid Extraction Oscillator

Overview

The Hanuo HN-LZ6 Liquid-Liquid Extraction Oscillator is an engineered laboratory instrument designed for reproducible, high-efficiency phase separation in solvent-based extraction workflows. Based on reciprocating linear oscillation mechanics—either vertical or precisely angled tilt—the device induces controlled mechanical agitation between immiscible liquid phases within standard and large-capacity separatory funnels. Unlike orbital shakers or vortex mixers, the HN-LZ6 applies consistent, low-shear oscillatory motion optimized for interfacial mass transfer without emulsion over-stabilization or glassware breakage. Its brushless DC motor ensures long-term speed stability under variable load conditions, making it suitable for regulated analytical laboratories performing sample preparation prior to GC, HPLC, ICP-MS, or spectrophotometric analysis.

Key Features

• Two selectable oscillation modes: true vertical reciprocation and adjustable tilt (0–22°) to enhance mixing efficiency across diverse solvent density differentials.
• Digital LED display showing real-time oscillation frequency (cycles/min) and cumulative cycle count—even retaining last-session settings after power-off.
• Stepless frequency control from 10 to 300 cycles/min (vertical) and 20 to 250 cycles/min (tilted), enabling method optimization for viscous or low-density solvent systems.
• Soft-start and soft-stop ramping minimizes mechanical shock to glassware, reducing risk of stopper ejection or funnel fracture during initiation or termination.
• Low-noise operation (<55 dB[A]) achieved via precision-machined linkage assembly and vibration-dampened chassis—critical for shared lab environments and ISO 17025-accredited facilities.
• Ergonomic quick-clamp fixture system accommodates both standard (50–1000 mL) and large-volume (50–3000 mL) separatory funnels without tools; clamping force is uniform and repeatable.
• Robust aluminum alloy frame with powder-coated steel base ensures structural integrity during extended operation and meets IP20 environmental protection requirements.

Sample Compatibility & Compliance

The HN-LZ6 supports a broad range of extraction protocols compliant with internationally recognized methods including EPA Method 3510C (liquid-liquid extraction), ASTM D7089-18 (determination of polycyclic aromatic hydrocarbons), and ISO 11337:2004 (water quality — extraction of organic compounds). Its dual-mode oscillation architecture enables validated adaptation to USP (residual solvents) and Chinese Pharmacopoeia ChP 2020 General Chapter 0421 (extraction of active pharmaceutical ingredients). All electrical components conform to EN 61010-1:2010 for laboratory equipment safety, while electromagnetic compatibility follows EN 61000-6-2/6-3. The unit does not incorporate data logging or electronic signature capabilities and therefore is not intended for 21 CFR Part 11 environments unless integrated with external validated software systems.

Software & Data Management

The HN-LZ6 operates as a standalone hardware platform with no embedded firmware, cloud connectivity, or proprietary software suite. All operational parameters—including frequency, tilt angle, and timer duration—are set manually via front-panel membrane switches and displayed locally. No data export, audit trail, or user access control is implemented. Laboratories requiring traceable parameter recording must employ external time-lapse video documentation or integrate the device into a validated LIMS-controlled workflow using third-party relay-triggered timestamping. Calibration verification is performed annually using a certified handheld tachometer (e.g., Extech 461923) against the displayed frequency value, with results recorded in lab notebooks per GLP documentation standards.

Applications

• Environmental analysis: extraction of organochlorine pesticides (e.g., DDT, lindane) from drinking water per EPA 508; heavy metal chelation (e.g., Cd, Pb) from soil leachates using APHA 3111B.
• Food safety testing: isolation of methanol in cosmetics (GB/T 24800.11–2009), benzoic acid in fruits (AOAC 978.12), and HMF (5-hydroxymethylfurfural) in wine and honey (ISO 18466).
• Pharmaceutical QC: recovery of penicillin G from apple-derived matrices (ChP 2020 Vol. IV), dissolution testing of tablet actives using chloroform/water partitioning.
• Forensic toxicology: liquid-phase cleanup of biological fluids prior to GC-MS detection of illicit substances.
• Agrochemical residue screening: multi-residue extraction of carbamates and organophosphates from rice grains (NY/T 761–2008).

FAQ

What is the maximum recommended volume per separatory funnel when operating at 300 cycles/min?
For safety and mechanical stability, do not exceed 80% of nominal capacity—i.e., ≤800 mL in a 1000 mL funnel or ≤2400 mL in a 3000 mL funnel—especially during vertical mode at ≥250 cycles/min.

Can the HN-LZ6 be used with fluorinated solvents such as Freon-113 or HCFC-141b?
Yes, provided all gasket materials (standard EPDM) are verified compatible with the solvent; for prolonged exposure to aggressive halogenated media, optional Viton®-lined clamps are available upon request.

Is the tilt angle calibrated at the factory and traceable to NIST standards?
The tilt mechanism includes a vernier scale with ±1° mechanical repeatability; however, no NIST-traceable calibration certificate is supplied. Users may verify angle accuracy using a digital inclinometer (e.g., Wixey WR365) placed on the oscillating plate surface.

Does the unit include overload or thermal protection for the motor?
Yes—integrated PTC thermistor and current-limiting circuitry automatically cut power if internal temperature exceeds 85°C or stall current persists beyond 3 seconds.

What maintenance intervals are recommended for optimal performance?
Lubricate the oscillation linkage pivot points every 6 months using lithium-based NLGI #2 grease; inspect clamp rubber inserts for compression set annually and replace if groove depth exceeds 0.5 mm.