Hanuo PS-10 Oil-Free Diaphragm Vacuum Pump

Overview

The Hanuo PS-10 is a compact, single-stage oil-free diaphragm vacuum pump engineered for reliable, contamination-free operation in routine laboratory workflows. Unlike rotary vane or piston-based vacuum sources, the PS-10 employs a positive-displacement mechanism wherein a flexible, chemically resistant polymer diaphragm oscillates within a sealed chamber to generate vacuum through cyclic expansion and contraction. This principle eliminates the need for lubricating oils—ensuring zero hydrocarbon or particulate carryover into sensitive downstream processes such as filtration, solid-phase extraction (SPE), solvent evaporation, and vacuum-assisted sample concentration. Designed for intermittent duty (up to 30 minutes continuous operation), the PS-10 delivers a stable ultimate vacuum of ≤80 kPa (absolute) and a nominal free-air flow rate of 10 L/min at atmospheric inlet pressure—sufficient for most benchtop vacuum applications requiring moderate suction performance and high chemical inertness.

Key Features

• Oil-free operation ensures absolute absence of oil vapor, particulates, or volatile organic compounds in the vacuum line—critical for analytical sample integrity and compliance with ISO/IEC 17025 traceability requirements.
• Die-cast aluminum alloy housing provides structural rigidity, thermal dissipation, and corrosion resistance while maintaining low mass for ergonomic handling.
• Reinforced elastomeric diaphragm with optimized flex geometry minimizes mechanical fatigue and extends service life under repeated cycling—validated per ASTM D6204 accelerated endurance testing protocols.
• Integrated bimetallic thermal cut-off switch automatically de-energizes the motor when internal temperature exceeds 40 °C, preventing coil insulation degradation and ensuring long-term reliability.
• No routine maintenance required: no oil changes, valve replacements, or bearing lubrication—reducing total cost of ownership and operational downtime.

Sample Compatibility & Compliance

The PS-10 is compatible with standard laboratory vacuum accessories including Buchner funnels, SPE manifolds, vacuum desiccators, and concentrator systems operating below 80 kPa absolute pressure. Its dry, non-reactive pumping path makes it suitable for handling aqueous, mildly acidic, and polar organic solvents (e.g., methanol, acetonitrile, ethyl acetate) without risk of diaphragm swelling or permeation. While not rated for explosive or highly corrosive vapors (e.g., HF, Cl₂, concentrated HNO₃), it conforms to IEC 61000-6-3 EMC emission standards and meets CE marking requirements for laboratory electrical equipment. The pump supports GLP-compliant workflows where documented vacuum stability and operator safety are essential—though it does not incorporate FDA 21 CFR Part 11–compliant audit trails or electronic signatures due to its standalone analog control architecture.

Software & Data Management

The PS-10 operates via a manual on/off rocker switch with no embedded microcontroller, display, or digital interface. As a purpose-built analog device, it does not support USB, RS-232, or Ethernet connectivity, nor does it generate time-stamped operational logs or vacuum profile data. This design prioritizes simplicity, electromagnetic immunity, and fail-safe behavior in environments where EMI-sensitive instrumentation (e.g., mass spectrometers, NMR preamps) is present. For laboratories requiring automated vacuum monitoring, the PS-10 may be integrated with external pressure transducers (e.g., capacitance manometers) and data acquisition systems compliant with ISO/IEC 17025 calibration traceability.

Applications

• Routine vacuum filtration of biological suspensions, precipitates, and particulate-laden solutions using glass or polypropylene filter holders.
• Automated solid-phase extraction (SPE) cartridge conditioning, loading, and elution across environmental, pharmaceutical, and food safety testing labs.
• Low-temperature solvent removal from heat-labile analytes during preparative chromatography or natural product isolation.
• Vacuum drying of moisture-sensitive reference standards and calibration materials in certified reference material (CRM) preparation workflows.
• Supporting vacuum desiccation of hygroscopic reagents and anhydrous reaction setups in synthetic chemistry laboratories.

FAQ

Is the PS-10 suitable for continuous 24/7 operation?
No—the PS-10 is rated for a maximum continuous duty cycle of 30 minutes, followed by a minimum 30-minute cooldown period to prevent thermal overload and diaphragm stress accumulation.
Can the PS-10 handle corrosive gases such as chlorine or hydrogen sulfide?
No—its polymer diaphragm and internal seals are not chemically resistant to strong oxidizers, halogens, or reducing acids; use only with ambient air or inert, non-aggressive vapors.
Does the pump require periodic calibration or certification?
No—vacuum performance is inherently stable and non-drifting; however, users should verify ultimate vacuum and flow rate annually against a calibrated reference gauge per ISO/IEC 17025 Section 6.4.10.
What is the expected service life under typical lab usage?
With adherence to duty-cycle limits and ambient temperature control, the diaphragm assembly typically exceeds 5,000 hours of cumulative operation before replacement becomes necessary.
Is the PS-10 compatible with vacuum controllers or programmable logic controllers (PLCs)?
Yes—its isolated AC input allows integration with external relay-based control circuits, though it lacks native digital communication interfaces or analog output signals.