Otisience AP-9950 Oil-Free Dual-Head Vacuum Pump

Overview

The Otisience AP-9950 is an oil-free, dual-head vacuum pump engineered for precision laboratory applications requiring clean, hydrocarbon-free vacuum generation and controlled positive pressure output. Unlike traditional oil-lubricated pumps, the AP-9950 employs a diaphragm-based dry pumping mechanism—eliminating oil vapor backstreaming, contamination risk, and routine oil maintenance. Its dual-pump-head architecture supports two operational modes: parallel configuration for enhanced volumetric flow (up to 40 L/min at ambient conditions), and series configuration for elevated pressure differentials (up to >500 kPa gauge pressure). This dual-mode flexibility enables consistent performance across diverse tasks—from vacuum filtration and solvent evaporation to inert gas purging, vacuum drying, and low-pressure sample handling in analytical sample preparation workflows.

Key Features

• Dual-head modular design with mechanical mode selector—enables rapid reconfiguration between parallel (high-flow) and series (high-pressure) operation without tools or disassembly.
• Integrated analog pressure regulation knob—provides continuous, stepless adjustment of vacuum level from atmospheric pressure down to >85 kPa (gauge), with real-time tactile feedback and repeatability within ±2 kPa under stable thermal conditions.
• Oil-free diaphragm pump technology—constructed with PTFE-coated elastomeric diaphragms and stainless-steel valve plates to ensure chemical resistance against common solvents (e.g., acetone, methanol, ethyl acetate) and long-term dimensional stability.
• Dual-port interface—features separate, labeled inlet (vacuum/negative pressure) and outlet (positive pressure) ports with standard 6 mm barbed fittings compatible with Tygon® LFL, Viton®, and silicone tubing (ID 4–6 mm).
• Compact, benchtop-optimized footprint—measures only 230 × 145 × 160 mm and weighs 3.8 kg, making it suitable for crowded fume hoods, mobile lab carts, and ISO Class 5+ cleanroom-adjacent environments.
• Low-noise, thermally managed motor—60 W brushless AC induction motor with integrated thermal cutoff (trip point: 95 °C) and passive aluminum heat sink ensures stable duty-cycle operation up to 8 hours/day under continuous load.

Sample Compatibility & Compliance

The AP-9950 is designed for use with non-corrosive, non-particulate, and non-condensable gases and vapors. It is not rated for explosive atmospheres (ATEX), halogenated solvents (e.g., chloroform, DCM), or high-humidity streams exceeding 70% RH without optional desiccant pre-trap integration. The pump housing and wetted materials comply with ISO 8573-1:2010 Class 4 purity standards for compressed air quality and meet RoHS Directive 2011/65/EU restrictions on hazardous substances. While not certified to UL/CSA or FDA 21 CFR Part 11, its construction and control logic support integration into GLP/GMP-aligned workflows where audit trails are maintained externally via connected instrumentation software.

Software & Data Management

The AP-9950 operates as a standalone analog device with no embedded microcontroller, firmware, or digital interface. All operation is manual and deterministic—ideal for regulated environments where software validation overhead must be minimized. Pressure settings are mechanically recorded via position index marks on the regulator knob; users may log setpoints manually or integrate the pump into external process monitoring systems using optional analog pressure transducers (e.g., 0–10 V or 4–20 mA output) mounted downstream. No driver installation, cloud connectivity, or cybersecurity protocols apply—reducing validation scope for QC laboratories adhering to Annex 11 or ALCOA+ data integrity principles.

Applications

• Vacuum-assisted filtration of aqueous and organic filtrates using glass or polypropylene filter holders (e.g., HPLC mobile phase degassing, microbial membrane filtration).
• Rotary evaporation support—providing stable, oil-free vacuum for low-boiling-point solvent removal in synthetic chemistry and natural product isolation.
• Gas purging of reaction vessels and sample vials prior to headspace GC analysis or oxygen-sensitive assays.
• Operation of solid-phase extraction (SPE) manifolds requiring precise, adjustable vacuum gradients across multiple columns.
• Positive-pressure actuation of pneumatic valves or fluidic switching modules in custom-built analytical manifolds.
• Pre-vacuum conditioning of desiccators, glove boxes, and vacuum ovens in materials science and pharmaceutical stability testing labs.

FAQ

Is the AP-9950 suitable for continuous 24/7 operation?
No—it is rated for intermittent duty cycles up to 8 hours per day. Extended continuous operation may accelerate diaphragm fatigue and reduce service life below the typical 12,000-hour MTBF specification.
Can I connect this pump directly to a mass spectrometer inlet?
No. The AP-9950 does not achieve the ultimate vacuum (<10⁻³ mbar) required for MS front-end interfacing. It is intended for rough vacuum applications only (1–100 kPa range).
What maintenance is required?
Annual inspection of diaphragm integrity and valve seating is recommended. Replacement diaphragm kits (Part #AP-DK9950) are available and require <15 minutes for field exchange using standard hex keys.
Does the pump include an exhaust filter?
Yes—a replaceable activated carbon + particulate exhaust filter is factory-installed to minimize ambient solvent vapor release and comply with local occupational exposure limits (OELs) per ACGIH TLV guidelines.
Is technical documentation available in English?
Yes—full English-language user manual, dimensional drawings, CE Declaration of Conformity, and RoHS compliance certificate are provided digitally upon order confirmation.