Cole-Parmer 07061 Dual-Head Diaphragm Vacuum/Pressure Pump

Overview

The Cole-Parmer 07061 series is a robust, oil-free diaphragm vacuum and pressure pump engineered for reliable dual-mode operation in regulated laboratory environments. Utilizing positive displacement via elastomeric diaphragms driven by an eccentric cam mechanism, it generates vacuum through cyclic expansion of the pumping chamber and pressure via forced compression—without lubricants, hydrocarbon contamination, or scheduled oil changes. This architecture ensures consistent performance across intermittent and continuous duty cycles, making it suitable for applications requiring clean, dry, and chemically inert gas handling. Unlike rotary vane or piston pumps, the 07061 eliminates risk of oil backstreaming into sensitive analytical systems (e.g., HPLC solvent degassing manifolds or microbial filtration housings), while its sealed motor design prevents particulate shedding into controlled environments.

Key Features

• Oil-free diaphragm technology ensures contaminant-free vacuum and pressure generation—critical for pharmaceutical filtration, bioprocess media preparation, and chromatographic solvent conditioning.
• Dual-head configuration (model 07061-05) delivers 51.0 L/min free-air flow at rated speed, enabling faster throughput in parallel filtration setups such as multi-well membrane manifolds or solid-phase extraction (SPE) vacuum manifolds.
• Integrated pressure/vacuum regulating valve and analog gauge allow real-time manual adjustment between −10 to −24 in Hg vacuum and +1 to +60 psi positive pressure—facilitating method-specific optimization without external controllers.
• Fan-cooled induction motor with thermal overload protection safeguards against sustained overcurrent conditions during high-backpressure filtration or extended duty cycles.
• Chemically resistant wetted materials—including 304 stainless steel valves, anodized aluminum housing, NORDel® EPDM diaphragms, and NOMEX® fiber-reinforced gaskets—ensure compatibility with aqueous buffers, alcohols, acetone, and mild organic solvents commonly used in QC labs.
• Low-noise operation (68 dB[A] at 1 m) meets typical ambient noise requirements for open-bench laboratory spaces, reducing acoustic fatigue during prolonged use.

Sample Compatibility & Compliance

The 07061 series supports filtration of diverse liquid matrices including cell culture media, serum, protein solutions, pharmaceutical suspensions, and food-grade extracts—provided they are non-corrosive and non-particulate-laden beyond filter pore ratings. It is routinely deployed in USP sterility testing workflows, FDA-regulated microbial limit testing (USP ), and ISO 11133-compliant microbiology lab setups. While not certified to specific GMP Annex 1 or 21 CFR Part 11 requirements out-of-the-box, its mechanical simplicity, absence of firmware or digital logs, and traceable component materials support integration into validated systems where audit trails are managed externally (e.g., via LIMS or paper-based SOPs). All units comply with IEC 61326-1 for electrical safety and EMC in laboratory environments.

Software & Data Management

The 07061 operates as a standalone electromechanical device with no embedded software, firmware, or network interface. Its analog pressure/vacuum gauge provides immediate visual feedback without calibration dependency on digital systems. For laboratories requiring electronic data capture, external pressure transducers (e.g., Honeywell ASDX series) or vacuum sensors with 4–20 mA or 0–10 V outputs can be integrated upstream/downstream via standard process connections. This architecture aligns with ALCOA+ principles—ensuring attributable, legible, contemporaneous, original, accurate, complete, consistent, enduring, and available records when paired with compliant data acquisition hardware and validated procedures.

Applications

• HPLC and UHPLC solvent degassing and mobile phase filtration using 0.22 µm or 0.45 µm membrane filters.
• Pharmaceutical quality control: Sterility testing filtration per USP , microbial enumeration per USP , and endotoxin sample preparation.
• Food and beverage microbiology: Membrane filtration of beverages, dairy products, and water samples for coliform and pathogen detection.
• Biotechnology: Sterile filtration of growth media, sera, and protein solutions prior to aseptic processing.
• Environmental analysis: Solid-phase extraction (SPE) cartridge conditioning and elution under controlled vacuum.
• Gas cylinder purging: Inert gas (N₂, CO₂, Ar) evacuation and pressurization of reaction vessels or storage containers.

FAQ

Is the 07061 suitable for continuous 24/7 operation?
Yes—its thermally protected motor and sealed diaphragm assembly are rated for indefinite intermittent or continuous duty, provided ambient temperature remains ≤38°C and inlet gas is free of condensate or particulates.
Can it handle corrosive vapors such as HCl or Cl₂?
No—wetted materials are incompatible with strong oxidizers, halogens, or highly acidic/basic vapors. Use only with air, inert gases, or low-volatility aqueous/organic solvents.
What maintenance is required?
Annual inspection of diaphragms and valve plates is recommended; replacement kits (Cat. No. EW-07061-01) include all wear components. No oil changes or bearing lubrication are needed.
Does it meet UL or CE certification?
Units sold in North America carry UL recognition per UL 61010-1; CE marking applies to EU-distributed variants complying with Directive 2014/30/EU (EMC) and 2014/35/EU (LVD).
How does it compare to rotary vane pumps for HPLC degassing?
It avoids oil contamination risks and requires no exhaust trapping, but offers lower ultimate vacuum (−24 in Hg vs. −29 in Hg). For most solvent degassing applications, this is sufficient—and preferred where solvent purity is critical.