Otisense AP-01P Oil-Free Vacuum and Pressure Pump

Overview

The Otisense AP-01P is a compact, dual-mode diaphragm pump engineered for reliable oil-free vacuum generation and low-pressure positive displacement in analytical and preparative laboratory workflows. Unlike rotary vane or piston pumps, the AP-01P operates on a reciprocating elastomeric diaphragm mechanism—driven by a brushless AC motor—to alternately expand and compress the sealed pumping chamber. This design eliminates lubrication requirements, prevents hydrocarbon contamination of sensitive samples or solvents, and ensures intrinsic chemical compatibility with organic media such as acetonitrile, methanol, THF, and chlorinated solvents. Its ultimate vacuum performance of ≥80 kPa (equivalent to −20 psi gauge or ~100 mbar absolute) supports routine degassing, solvent filtration, solid-phase extraction (SPE), and vacuum-assisted column conditioning. The pump is not intended for high-vacuum applications (e.g., mass spectrometry inlet systems or freeze drying) but delivers stable, pulse-dampened flow ideal for continuous low-to-moderate vacuum demand across chromatography, sample prep, and benchtop synthesis setups.

Key Features

• Oil-free diaphragm architecture: Fully sealed PTFE-coated diaphragm and PPS polymer housing resist swelling, cracking, and chemical degradation when exposed to aggressive organic solvents and acidic/basic vapors.
• Dual operational mode: Configurable for vacuum draw-down (vacuum mode) or gentle positive pressure delivery (pressure mode) via directional valve routing—enabling both filtration assistance and controlled sample transfer.
• Low-noise, low-heat operation: 35 W motor with thermal cut-off protection minimizes acoustic emission (<62 dB(A) at 1 m) and avoids localized heating that could volatilize thermally labile analytes during extended use.
• Compact footprint & portability: Weighing only 3.1 kg and measuring 246 × 190 × 135 mm, the AP-01P integrates seamlessly into fume hoods, LC workstations, and mobile QC carts without requiring dedicated bench space or vibration isolation.
• Serviceable design: Modular diaphragm assembly allows field replacement without specialized tools; standard maintenance intervals exceed 5,000 hours under typical intermittent duty cycles (≤30% duty cycle recommended).

Sample Compatibility & Compliance

The AP-01P is validated for use with aqueous buffers, HPLC-grade organic solvents, and mildly corrosive reagents (e.g., dilute HCl, NaOH ≤0.1 M). Its wetted materials—PTFE diaphragm, PPS manifold, silicone or Viton® check valves (depending on configuration)—meet USP Class VI biocompatibility criteria and are inert per ASTM D543-20. While not certified to ISO 8573-1 for compressed air purity, its oil-free output complies with ISO 8573-7 Class 0 for particulate and oil aerosol content when used with inline particulate filters. The unit is CE-marked and conforms to electromagnetic compatibility (IEC 61000-6-3) and immunity (IEC 61000-6-2) standards. It supports Good Laboratory Practice (GLP) documentation through traceable serial-number logging and is compatible with audit-ready workflows requiring instrument calibration records and preventive maintenance logs.

Software & Data Management

The AP-01P operates as a standalone analog device with manual on/off control and mechanical pressure regulation (via integrated needle valve). It does not feature digital interfaces (e.g., RS-232, USB, or Ethernet), nor embedded firmware or data logging capabilities. However, it is fully interoperable with third-party process monitoring systems via dry-contact relay outputs (optional accessory kit available). When deployed in regulated environments (e.g., pharmaceutical QC labs operating under FDA 21 CFR Part 11), users may integrate the pump into broader equipment qualification protocols—including Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ)—using external pressure transducers and validated data acquisition software. Calibration certificates for vacuum gauges used in conjunction with the AP-01P are traceable to NIST standards.

Applications

• HPLC and UHPLC mobile phase degassing and filtration using FB-series filter bottle assemblies
• Solid-phase extraction (SPE) manifold evacuation for reproducible cartridge conditioning and elution
• Vacuum-assisted drying of thin-layer chromatography (TLC) plates or microplates
• Low-pressure purging of reaction vessels prior to inert-atmosphere synthesis
• Sample concentration support for nitrogen blow-down systems (as auxiliary vacuum source)
• Gas sampling bag evacuation in environmental VOC analysis workflows

FAQ

Is the AP-01P suitable for continuous 24/7 operation?
No. It is rated for intermittent duty—maximum 30 minutes ON followed by 15 minutes OFF—to prevent thermal overload and diaphragm fatigue. Continuous operation exceeds design limits and voids warranty.

Can this pump be used with aggressive acids like concentrated nitric acid vapor?
Not recommended. While PTFE and PPS offer broad chemical resistance, concentrated oxidizing acids may degrade elastomeric valve components over time. Consult the full chemical compatibility chart before exposure.

Does the AP-01P include an integrated vacuum gauge?
No. Vacuum level must be monitored externally using a calibrated digital or analog gauge connected downstream of the pump outlet.

What maintenance is required beyond diaphragm replacement?
Annual inspection of check valves and cleaning of inlet/outlet ports with isopropanol; no lubrication or alignment procedures are necessary due to the oil-free, self-aligning diaphragm mechanism.

Is the AP-01P compliant with UL or CSA safety standards?
It carries CE marking per EU Low Voltage Directive (2014/35/EU) and RoHS 2011/65/EU. UL/CSA certification is not held; laboratories requiring North American safety listing should verify local regulatory acceptance prior to deployment.