Innoteg Pett Fix Fixed-Volume Manual Pipette

Overview

The Innoteg Pett Fix is a precision-engineered single-channel fixed-volume manual pipette designed for high-reproducibility liquid handling in regulated and research-intensive laboratory environments. Built upon the ISO 8655 standard for piston-operated volumetric apparatus, the Pett Fix employs a gas-tight, air-displacement principle with a precisely machined stainless-steel plunger and a conical tip interface optimized for minimal dead volume and consistent seal integrity. Unlike adjustable-volume pipettes, the Pett Fix eliminates user-induced volume-setting errors by locking the dispense volume at factory calibration—making it ideal for repetitive assays, QC testing, reagent pre-aliquoting, and applications requiring traceable, unambiguous volume delivery. Its full-assembly autoclavability (121°C, 20 minutes, 100 kPa) ensures compliance with GLP and GMP workflows where sterility assurance and contamination control are non-negotiable.

Key Features

• Fixed-volume architecture with factory-set, tamper-resistant volume—eliminates misadjustment and drift associated with variable-volume mechanisms
• Full-assembly autoclavable design: all components—including shaft, tip cone, and ergonomic grip—tolerate standard steam sterilization without disassembly or recalibration
• Diamond-like carbon (DLC) coating applied to both the conical tip interface and internal piston surface, delivering exceptional wear resistance, chemical inertness, and low friction for consistent plunger travel force across >100,000 cycles
• Ergonomic dual-grip system: includes interchangeable soft-touch polymer and textured thermoplastic elastomer handles—engineered to minimize thermal transfer from hand to pipette body, reducing temperature-induced volume deviation (critical for viscous or temperature-sensitive samples)
• Large, recessed LCD display with high-contrast digits—positioned to remain fully visible during tip attachment and dispensing, even when wearing gloves
• Low operating force profile: optimized spring tension and balanced lever mechanics reduce thumb fatigue during high-throughput operations (tested per ISO 8655-6 mechanical endurance protocol)

Sample Compatibility & Compliance

The Pett Fix supports aqueous solutions, buffers, dilute acids/bases, ethanol, and common organic solvents compatible with polypropylene tips and DLC-coated metal surfaces. It is validated for use with standard ISO 8655-compliant conical tips (e.g., 10–1000 µL universal-fit). The device conforms to ISO 8655-1 (terminology), ISO 8655-2 (performance requirements), and ISO 8655-5 (calibration methods), and its manufacturing process adheres to EN ISO 9001:2015 quality management standards. For regulated environments, the pipette’s fixed-volume designation simplifies documentation under FDA 21 CFR Part 11 and EU Annex 11, as no electronic audit trail for volume adjustment is required—only periodic verification using gravimetric or photometric methods per ISO/IEC 17025-accredited protocols.

Software & Data Management

As a manually operated, non-electronic instrument, the Pett Fix does not incorporate onboard software or connectivity features. However, its fixed-volume specification enables seamless integration into digital lab infrastructure: calibration records, maintenance logs, and usage history can be managed within LIMS or ELN platforms via standardized metadata fields (e.g., model, serial number, last verification date, assigned user). Each unit ships with a traceable calibration certificate referencing NIST-traceable mass standards and including uncertainty values per ISO/IEC 17025. Optional IQ/OQ documentation packages are available for GxP validation support.

Applications

• High-frequency dispensing in ELISA, PCR setup, and cell culture media preparation where volume consistency outweighs flexibility
• Reference standard aliquoting in analytical chemistry labs—especially for calibration stock solutions requiring certified volume repeatability
• Automated workstation pre-pipetting: used offline to prepare master mixes prior to robotic loading, minimizing instrument downtime
• Teaching laboratories—ideal for training on fundamental pipetting technique without volume-setting complexity
• Environmental and clinical testing labs complying with ISO/IEC 17025, CLIA, or CAP requirements for documented, fixed-volume transfer steps

FAQ

Is the Pett Fix suitable for handling corrosive or high-viscosity liquids?
Yes—its DLC-coated piston and conical interface provide broad chemical resistance. For viscous fluids (>100 mPa·s), pre-wet tip aspiration and slow, consistent plunger actuation are recommended per ISO 8655-6 guidance.
Does autoclaving affect calibration accuracy?
No—each unit undergoes post-autoclave verification during final QA. Independent testing confirms volume retention within ±0.5% of nominal value after 10 consecutive sterilization cycles.
Can I replace the grip handles myself?
Yes—grips are tool-free swappable and available as consumable kits (P/N: PETT-FIX-GRIP-KIT). No recalibration is required after replacement.
What is the recommended recalibration interval?
Annual verification is advised per ISO 8655-5. More frequent checks may be necessary in high-use or critical applications, guided by risk assessment per ISO/IEC 17025 Clause 7.7.
Is there a service program for international users?
Yes—Innoteg partners with ISO/IEC 17025-accredited service providers in EEA, North America, and APAC regions for on-site verification, repair, and certification renewal.