Drummond Portable Pipet-Aid® XP Handheld Electronic Pipette Controller
| Brand | Drummond |
|---|---|
| Origin | USA |
| Model | Portable Pipet-Aid® XP |
| Weight | 230 g |
| Dimensions | 14 cm (L) |
| Compatible Pipettes | 1–100 mL volumetric and graduated pipettes |
| Power Source | Rechargeable Ni-MH battery (9 V equivalent) |
| Charging Input | 220 V AC adapter (CE-compliant) |
| Accessories Included | Four replacement hydrophobic filters, wall-mount bracket, gravity drain option available (model 4-000-202) |
| Regulatory Compliance | CE-marked |
Overview
The Drummond Portable Pipet-Aid® XP is a precision-engineered, handheld electronic pipette controller designed for ergonomic, repeatable, and contamination-controlled liquid handling in academic, clinical, and industrial laboratories. Unlike traditional mouth pipetting or bulkier benchtop controllers, the Pipet-Aid® XP operates on the principle of regulated air displacement—using a brushless DC motor and microprocessor-controlled airflow to deliver consistent aspiration and dispensing across the full 1–100 mL pipette range. Its compact architecture (14 cm length, 230 g mass) eliminates operator fatigue during extended use and supports ambulatory workflows—including biosafety cabinets, laminar flow hoods, and field-deployable mobile labs. As the original Pipet-Aid® platform—first introduced by Drummond Scientific in the 1980s—the XP iteration maintains full backward compatibility with legacy accessories while integrating modern power management and tactile user feedback.
Key Features
- Ergonomic, one-handed operation with intuitive thumb-wheel speed control and tactile click feedback
- Nine discrete, user-selectable aspiration/dispense speeds—enabling fine-tuned control for viscous, volatile, or foaming liquids
- Universal pipette holder with positive-lock mechanism—secures glass and plastic serological pipettes (1–100 mL) without slippage or seal failure
- Integrated rechargeable Ni-MH battery (9 V nominal), delivering >6 hours of continuous operation per charge; battery is field-replaceable without tools
- Modular design includes removable hydrophobic PTFE filters (0.2 µm pore size) to prevent aerosol ingress into the motor assembly—critical for RNase/DNase-sensitive applications
- Optional gravity drain configuration (model 4-000-202) facilitates passive liquid recovery in sterile or hazardous environments where active dispensing is contraindicated
- Wall-mount bracket included as standard—enables hands-free storage and rapid deployment in high-throughput workspaces
Sample Compatibility & Compliance
The Pipet-Aid® XP is validated for use with all standard Class A and Class B volumetric and graduated pipettes conforming to ISO 648 and ISO 1042 specifications. It does not require calibration against individual pipette types, as airflow dynamics are decoupled from pipette geometry via pressure-compensated aspiration logic. The device carries CE marking per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and complies with IEC 61000-6-2/6-3 immunity and emission standards. While not classified as a medical device under FDA 21 CFR Part 820, its filter-integrated design supports GLP and GMP-aligned workflows where documentation of aerosol barrier integrity is required. Drummond provides traceable filter lot documentation upon request for audit readiness.
Software & Data Management
The Pipet-Aid® XP operates as a standalone electromechanical instrument with no embedded firmware update capability or digital connectivity. This design choice prioritizes operational reliability, electromagnetic immunity in sensitive instrumentation environments (e.g., near NMR or mass spectrometers), and long-term serviceability without obsolescence risk. All functional parameters—including speed selection, battery status, and filter life estimation—are communicated via LED indicators and mechanical feedback only. For laboratories requiring electronic usage logs or audit trails, Drummond recommends integration with third-party lab information management systems (LIMS) via manual entry or barcode-scanned pipette tracking protocols aligned with ISO/IEC 17025 clause 7.7.
Applications
- Cell culture maintenance: Gentle aspiration of trypsin-EDTA or serum-containing media without shear-induced cell lysis
- Clinical microbiology: Accurate transfer of bacterial suspensions for McFarland standard preparation (ISO 20776-1)
- Environmental testing: Serial dilution of water samples for coliform enumeration (EPA Method 1603)
- Pharmaceutical QC: Handling of viscous excipients (e.g., glycerol, propylene glycol) during formulation development
- Teaching laboratories: Pedagogical tool for demonstrating proper pipetting technique and error sources (e.g., tip immersion depth, dwell time)
- Biosafety Level 2+ work: Paired with filter-equipped tips for handling pathogens under containment conditions
FAQ
Is the Pipet-Aid® XP compatible with positive-displacement pipettes?
No—it is engineered exclusively for air-displacement (serological/volumetric) pipettes ranging from 1–100 mL. Positive-displacement systems require direct piston contact and are incompatible with the XP’s airflow architecture.
Can the Ni-MH battery be replaced by the end user?
Yes—the battery compartment is accessible via two Phillips screws; replacement kits (Drummond P/N 4-000-210) are available with full torque and polarity alignment guides.
What is the recommended filter replacement interval?
Under typical use (≤4 hrs/day, aqueous solutions), replace filters every 3 months or immediately after exposure to ethanol, acetone, or high-salt buffers to maintain hydrophobic integrity.
Does Drummond provide calibration certification?
The XP is not a measuring instrument per ISO/IEC 17025 and therefore does not receive formal calibration certificates. However, Drummond supplies a Performance Verification Protocol (PVP) document outlining test methods using gravimetric checks per ASTM E538.
