Cole-Parmer Miniature Gear Pump Model 07012 Series

Overview

The Cole-Parmer Miniature Gear Pump Model 07012 Series is an engineered positive displacement pump designed for precise, low-flow fluid handling in analytical instrumentation, microfluidic systems, and laboratory-scale process applications. Utilizing a robust internal gear mechanism with tight-tolerance acetal (Delrin®) gears and PTFE-sealed nitrile elastomer components, this pump delivers consistent volumetric displacement across a wide range of Newtonian and mildly shear-thinning liquids. Its compact footprint, modular housing options (OEM, open-frame, and fully enclosed lab-grade variants), and compatibility with low-voltage DC and standard AC power supplies make it suitable for integration into OEM analytical platforms—including HPLC auxiliary solvent delivery, reagent dosing in automated assay systems, and continuous sampling loops in environmental monitoring setups. The pump operates on the principle of intermeshing gears rotating within a close-fitting cavity, generating flow by mechanically entrapping and displacing fluid between gear teeth and pump housing walls—ensuring repeatable flow rates independent of backpressure within its rated operating envelope.

Key Features

• Three configuration variants: Open-frame OEM (07012-00/02), fully enclosed benchtop lab pump (07012-30/32), and low-voltage 12 VDC version (07012-20) for portable or battery-powered applications
• Precise flow control up to 2.52 L/min at maximum pressure of 21 psi (1.4 bar), with inherent linearity across 10–100% of rated capacity
• Wetted path constructed from chemically resistant materials—acetal (Delrin®) gears and housing, nitrile rubber seals, PTFE gaskets, and 304 stainless steel shaft—validated for compatibility with aqueous buffers, alcohols, hydrocarbons, and mild organic solvents
• Thermal stability up to 93°C (200°F), enabling use in heated fluid paths common in chromatography and bioprocessing
• No dry-run capability—requires priming and continuous liquid presence to prevent gear wear and seal degradation
• Integrated thermal protection on AC-powered models; no external pressure relief valve required for typical lab-scale backpressures

Sample Compatibility & Compliance

This pump is intended for use with clean, particle-free liquids having viscosities ≤200 cP. Suspensions, slurries, or abrasive media are incompatible and may cause premature gear wear or seal extrusion. The wetted material set meets USP Class VI and FDA 21 CFR 177.2470 requirements for indirect food contact and general laboratory use. All AC-powered variants comply with IEC 61010-1:2010 for electrical safety in laboratory environments and carry CE marking under the Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU). RoHS 2011/65/EU compliance ensures absence of lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. While not certified for hazardous locations, the 12 VDC model (07012-20) is intrinsically safe for use in controlled environments where spark mitigation is critical.

Software & Data Management

The Model 07012 Series is a standalone electromechanical device without embedded firmware, digital interfaces (e.g., RS-232, USB, or Modbus), or onboard data logging. Flow rate modulation is achieved solely via external voltage regulation (for DC models) or variable-frequency drive (VFD) input (for AC variants when paired with compatible controllers). For traceable operation in GLP/GMP-regulated workflows, integration with third-party programmable logic controllers (PLCs) or LabVIEW-based acquisition systems is recommended. Audit trails, run-time logging, and electronic signatures must be implemented externally—no native support for FDA 21 CFR Part 11 compliance is provided. Calibration certificates (NIST-traceable flow verification) are available upon request for individual units.

Applications

• Low-flow mobile phase delivery in preparative and analytical HPLC systems requiring stable, pulseless output
• Reagent metering in clinical chemistry analyzers and ELISA wash stations
• Continuous sample introduction into ICP-OES and atomic absorption spectrometers
• Fluid circulation in small-volume bioreactors and perfusion culture systems
• OEM integration into environmental sensors for water quality monitoring (e.g., nitrate, phosphate, or heavy metal analyzers)
• Calibration fluid transfer in metrology labs supporting viscosity standardization protocols (ASTM D445, ISO 3104)

FAQ

Can this pump handle viscous silicone oils or glycerol solutions?
No. Maximum rated viscosity is 200 cP at operating temperature. Silicone oils (≥1,000 cP) and undiluted glycerol (1,412 cP at 20°C) exceed design limits and risk stalling or gear overload.

Is the pump self-priming?
It achieves up to 3.0 m (10 ft) wet suction lift but requires initial priming. Dry suction capability is limited to 10.2 cm (4 in); prolonged dry operation will damage gears and seals.

What maintenance intervals are recommended?
Under continuous operation with compatible fluids, inspect seals and gear endplay every 6 months. Replace nitrile seals annually or after 5,000 hours of runtime. Acetal gears typically exceed 10,000-hour service life under clean-fluid conditions.

Are replacement parts available separately?
Yes. Individual gear sets (07012-GEAR), seal kits (07012-SEAL-KIT), and motor assemblies (07012-MOTOR) are stocked and orderable under distinct part numbers.

Does Cole-Parmer provide flow calibration data per unit?
Standard units ship without individual calibration reports. NIST-traceable flow verification (±1.5% full-scale accuracy) is available as a value-added service at time of order—specify requirement when placing purchase order.