DRETOP F8-1000 Vertical Oscillator

Overview

The DRETOP F8-1000 Vertical Oscillator is a robust, benchtop mechanical shaker engineered for high-efficiency liquid–liquid extraction and solid–liquid partitioning in analytical and environmental laboratories. Operating on the principle of controlled reciprocating vertical motion—optionally adjustable to a 0–20° tilt angle—the instrument delivers consistent kinetic energy transfer to samples housed in standard volumetric glassware, including separatory funnels, centrifuge tubes, and volumetric flasks. Unlike orbital or rotary shakers, its linear vertical oscillation minimizes vortex formation while maximizing interfacial contact between immiscible phases, making it particularly suited for applications where phase separation integrity must be preserved post-extraction. The device is widely deployed in pre-analytical sample preparation workflows compliant with EPA Method 3510C (liquid–liquid extraction), ASTM D3764 (extraction of organics from water), and ISO 11348-3 (toxicity testing using luminescent bacteria), where reproducible agitation without emulsification is critical.

Key Features

• Stepless frequency control (0–300 cycles/min) with integrated soft-start and soft-stop algorithms to prevent sample splashing and ensure mechanical stability during acceleration/deceleration.
• Dual-mode oscillation: selectable vertical or tilt-mode operation (0–20° adjustable inclination) to accommodate varied vessel geometry and phase-density differentials.
• Low center-of-gravity structural design ensures operational stability under full load (eight 1000 mL containers), minimizing vibration transmission to adjacent instrumentation.
• Large-capacity platform (8-position configuration) supports standardized 1000 mL separatory funnels or equivalent labware; sample holders feature vertically sliding fixtures for rapid loading/unloading without tooling.
• LCD-based user interface with programmable digital timer (0–9999 minutes) enabling unattended overnight extractions and repeatable protocol execution.
• Housing constructed with electrostatically sprayed steel for corrosion resistance and ease of decontamination—compatible with common laboratory disinfectants and organic solvents.

Sample Compatibility & Compliance

The F8-1000 accommodates a broad range of sample containers—including class A separatory funnels (1000 mL), borosilicate centrifuge tubes (up to 1000 mL), and volumetric flasks—without requiring proprietary adapters. Its non-temperature-controlled design aligns with ambient-condition extraction protocols specified in US EPA SW-846 Methods 3510, 3520, and 3540, as well as ISO 18253 (determination of hydrocarbons in soil). While not certified for GLP or GMP environments out-of-the-box, the instrument’s deterministic timing, repeatable amplitude (≥40 mm), and mechanical traceability support audit-ready documentation when integrated into validated SOPs. It meets CE safety directives (2014/30/EU EMC and 2014/35/EU LVD) and conforms to IEC 61010-1:2010 for laboratory electrical equipment safety.

Software & Data Management

The F8-1000 operates via embedded firmware with no external PC dependency. All parameters—including target frequency, tilt angle (if enabled), and elapsed/remaining time—are displayed and stored locally on the LCD panel. Though it lacks Ethernet or USB connectivity, the unit supports manual logging of operating conditions (e.g., frequency, duration, vessel type) in accordance with ISO/IEC 17025 clause 7.7 (result reporting) and FDA 21 CFR Part 11 requirements when paired with a validated electronic lab notebook (ELN) system. Optional calibration certificates (traceable to NIM, China) are available upon request for metrological verification.

Applications

• Environmental analysis: Extraction of PAHs, PCBs, organochlorine pesticides, and phenolic compounds from aqueous matrices, soils, and sediments.
• Food safety testing: Isolation of mycotoxins (e.g., aflatoxin B1), fat-soluble vitamins, and pesticide residues from homogenized food extracts.
• Pharmaceutical QC: Liquid–liquid partitioning of active pharmaceutical ingredients (APIs) during method development and impurity profiling.
• Academic research: Kinetic studies of extraction efficiency under variable amplitude/frequency conditions; comparative evaluation of solvent systems.
• Regulatory compliance labs: Reproducible sample prep for accredited testing per CNAS-CL01 (equivalent to ISO/IEC 17025).

FAQ

Does the F8-1000 support temperature-controlled operation?
No. This model is strictly a mechanical oscillator without integrated heating or cooling elements. For thermostatic extraction, consider DRETOP’s F8-1000T series (optional Peltier module available).
Can it accommodate 3000 mL separatory funnels?
No. The F8-1000 platform is rated for eight 1000 mL vessels. For larger capacity, refer to the F8-3000 variant (8 × 3000 mL configuration).
Is the oscillation amplitude adjustable?
Amplitude is fixed at ≥40 mm per manufacturer specification and is not user-variable; however, frequency and tilt angle are fully adjustable.
What maintenance is required?
Routine cleaning of the platform and housing; periodic inspection of drive belt tension and mounting bolts per biannual preventive maintenance schedule.
Are calibration services available internationally?
Yes—DRETOP provides factory calibration reports traceable to national standards (NIM); third-party ISO 17025-accredited calibration is supported through authorized regional partners.