Beifen Sanpu DZD-16 Fully Automated Inversion-Type Liquid-Liquid Extractor

Overview

The Beifen Sanpu DZD-16 Fully Automated Inversion-Type Liquid-Liquid Extractor is an engineered solution for standardized, high-reproducibility liquid-liquid extraction (LLE) in environmental and analytical chemistry laboratories. Unlike conventional orbital shakers or manual separatory funnel agitation, the DZD-16 employs a controlled 360° inversion motion—driven by a precision-adjustable frequency motor—to induce vigorous, uniform mixing between aqueous and organic phases within sealed extraction vessels. This mechanical inversion mimics the kinetic energy profile of manual hand-shaking while eliminating operator variability, solvent exposure, and inconsistent contact time. The system operates at ambient temperature without active heating or cooling, making it suitable for volatile analyte extraction (e.g., petroleum hydrocarbons, phenols, anionic surfactants) where thermal degradation or evaporation must be avoided. All extractions occur in fully enclosed containers, ensuring compliance with laboratory safety protocols for hazardous solvent handling and minimizing VOC emissions—critical for ISO/IEC 17025-accredited labs and EPA Method-compliant workflows.

Key Features

• Fully automated operation with digital timer resolution down to 1 second (1 s – 99 h 99 min), enabling precise method reproducibility across multi-batch analyses.
• Bidirectional inversion drive (forward/reverse) with continuously adjustable speed (0–200 rpm), supporting method optimization for diverse matrix viscosities and partition coefficients.
• High-frequency oscillation capability (≥300 cycles per minute during active inversion), enhancing interfacial mass transfer and achieving >95% extraction efficiency as validated against reference methods (e.g., EPA 1664A, ISO 9377-2).
• 16-position universal tray accommodating either eight 250 mL or eight 500 mL standardized glass or PTFE-lined extraction bottles—compatible with common EPA and ASTM bottle specifications.
• Integrated sanitary-grade stainless steel cleaning trough with drain valve, facilitating rapid post-run decontamination and residue removal without disassembly.
• Hinged lid design enables tool-free, ergonomic loading/unloading—optimized for use inside fume hoods (unit footprint: 580 × 420 × 360 mm).
• No external refrigeration or heating required; ambient-only operation reduces energy consumption and eliminates thermal drift in temperature-sensitive extractions.

Sample Compatibility & Compliance

The DZD-16 is routinely deployed in regulatory-compliant analysis of surface water, drinking water, industrial effluents, and municipal wastewater. It supports standard methods including but not limited to: EPA Method 1664 (petroleum hydrocarbons), EPA Method 425.1 (phenols), ISO 22033 (anionic surfactants), and GB/T 5750.7–2006 (Chinese national standard for drinking water). Its sealed-vessel architecture meets OSHA and CLP requirements for handling Class II–III organic solvents (e.g., n-hexane, dichloromethane, ethyl ether). The absence of open agitation prevents aerosol generation and ensures full alignment with GLP documentation practices. While the instrument itself does not include data integrity features (e.g., electronic audit trail), its deterministic timing and repeatable mechanical action support 21 CFR Part 11–compliant data recording when paired with validated LIMS or ELN systems.

Software & Data Management

The DZD-16 operates via an embedded microcontroller-based interface with no proprietary software dependency. All parameters—including elapsed time, remaining time, direction mode, and rpm—are displayed on a high-contrast LED screen and retained in non-volatile memory across power cycles. No USB, Ethernet, or Bluetooth connectivity is provided; however, the unit’s deterministic behavior (fixed cycle count per run, zero drift in timing accuracy) allows seamless integration into paper-based or electronic lab notebook (ELN) workflows. For laboratories requiring automated data capture, third-party programmable logic controllers (PLCs) or serial-enabled data loggers may be interfaced via optional TTL-level trigger outputs (available upon request from manufacturer).

Applications

• Quantitative isolation of non-polar analytes—including total petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAHs), and chlorinated pesticides—from aqueous environmental matrices.
• Extraction of weakly acidic compounds such as phenols and cresols using pH-controlled partitioning into organic phases.
• Recovery of anionic surfactants (e.g., linear alkylbenzene sulfonates, LAS) via ion-pair formation and subsequent organic-phase transfer.
• Pre-concentration steps prior to GC-FID, GC-MS, or HPLC-UV analysis in routine water quality monitoring programs.
• Method development and validation studies requiring strict control over mixing intensity, duration, and phase-contact geometry.

FAQ

Does the DZD-16 support temperature-controlled extraction?
No. The unit operates at ambient laboratory temperature only and does not incorporate heating or cooling elements.
Can the DZD-16 be used with fluorinated solvents such as Freon-113 alternatives?
Yes—provided the extraction vessels are chemically compatible (e.g., PTFE-sealed glass vials); users must verify solvent resistance per vessel material specifications.
Is calibration required before first use or after maintenance?
No formal calibration is specified; however, users should verify timer accuracy annually using a calibrated stopwatch and confirm rotational consistency via tachometer measurement.
What safety certifications does the instrument carry?
The DZD-16 complies with GB 4793.1–2019 (Chinese safety standard for electrical equipment in laboratories) and meets CE marking requirements under the Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU).
Are spare parts and service support available outside mainland China?
Beifen Sanpu provides OEM technical documentation and maintains distributor partnerships in Southeast Asia and the Middle East; direct international service contracts are available upon inquiry.