AHN 4u® Pro Single-Channel Manual Pipette (0.1 µL – 10 mL Range)

Overview

The AHN 4u® Pro Single-Channel Manual Pipette is a precision-engineered liquid handling instrument designed for high-reproducibility volumetric transfer across an exceptionally broad range—from ultra-low volumes of 0.1 µL up to 10 mL. Built upon the ISO 8655-2:2022 standard for piston-operated volumetric apparatus, this pipette employs a gas-tight, air-displacement mechanism with a corrosion-resistant stainless-steel plunger and chemically inert polymer housing. Its mechanical design minimizes hysteresis and ensures consistent piston seal performance over thousands of cycles. The device is fully autoclavable (121 °C, 20 min), supporting stringent GLP/GMP laboratory workflows where traceability, sterility, and reusability are mandatory. Unlike electronic or semi-automated systems, the 4u® Pro delivers deterministic, user-controlled aspiration and dispensing—ideal for applications requiring tactile feedback, rapid volume adjustment, and minimal instrument dependency.

Key Features

• Ergonomic soft-grip handle with low-activation-force plunger mechanism—reduces hand fatigue and mitigates risk of repetitive strain injury (RSI) during extended use.
• Volume-range-specific color coding on tip ejector and volume dial for rapid visual identification and error prevention in multi-volume workflows.
• Fully autoclavable construction: all major components—including shaft, tip cone, and internal seals—are validated for repeated sterilization without degradation of accuracy or mechanical integrity.
• Two operational configurations: adjustable-volume models (with fine-tuned digital volume display) and fixed-volume variants (for high-throughput, single-step protocols).
• High chemical resistance profile: compatible with aqueous solutions, alcohols, dilute acids/bases, and common organic solvents—validated per ISO 8655-5 Annex C exposure testing.
• Mechanically robust architecture: precision-machined stainless-steel gear train and ceramic-coated piston ensure long-term calibration stability under routine lab conditions.

Sample Compatibility & Compliance

The AHN 4u® Pro accommodates standard conical polypropylene pipette tips (ISO 8655-3 compliant) across its full volume spectrum—from low-retention 0.1–10 µL microtips to wide-bore 5–10 mL tips. It maintains metrological validity for viscous liquids (e.g., glycerol, serum, cell suspensions) when used with reverse pipetting technique and appropriate tip selection. All models are manufactured in accordance with EN ISO 13485:2016 for medical device quality management systems and carry CE marking under Directive 98/79/EC (IVDR). Performance verification data—including accuracy (±% of set volume) and precision (coefficient of variation)—are provided per ISO 8655-2 Annex B test protocols and traceable to national metrology institutes (e.g., PTB, NIST). Calibration certificates (as per ISO/IEC 17025) are available upon request for audit-ready documentation.

Software & Data Management

As a manual pipette, the 4u® Pro does not incorporate embedded electronics or firmware; therefore, it requires no software installation, driver configuration, or network connectivity. This architecture eliminates cybersecurity vulnerabilities, firmware update dependencies, and battery-related failure modes—enhancing operational continuity in regulated environments. However, its metrological traceability supports integration into broader laboratory quality systems: calibration records, usage logs, and maintenance histories can be documented within LIMS or ELN platforms (e.g., LabWare, Benchling, Veeva Vault) using standardized templates aligned with FDA 21 CFR Part 11 requirements for electronic records and signatures. Each unit ships with a unique serial number and a factory-verified calibration report—enabling full audit trail generation for GLP, GMP, or CLIA compliance.

Applications

• Quantitative sample preparation for HPLC, GC, and LC-MS analysis—particularly where low-volume accuracy (<1 µL) and solvent compatibility are critical.
• Cell culture work including passaging, media supplementation, and transfection reagent delivery—leveraging low dead-volume tip engagement and gentle plunger actuation.
• Clinical diagnostics workflows requiring ISO 15189-aligned pipetting validation, such as ELISA, PCR master mix assembly, and hematology dilutions.
• QC/QA testing in pharmaceutical manufacturing: raw material assay, dissolution sampling, and stability-indicating method transfers.
• Academic and industrial research involving enzyme kinetics, protein crystallization screening, and microfluidic device loading—where reproducible sub-microliter dispensing directly impacts experimental fidelity.

FAQ

Is the AHN 4u® Pro compatible with third-party pipette tips?
Yes—it accepts all ISO 8655-3–compliant conical tips; however, optimal accuracy and leak-free operation are guaranteed only with AHN-certified tips due to dimensional tolerancing and seal interface optimization.
What is the recommended recalibration interval?
Per ISO 8655-6, annual calibration is advised for routine use; more frequent verification (e.g., quarterly) is required in GxP environments or after mechanical shock, autoclaving >50 cycles, or observed performance drift.
Can the pipette be used for volatile or corrosive liquids?
It is rated for moderate organic solvents (e.g., methanol, acetone, DMSO) and dilute acids/bases (≤1 M); prolonged exposure to strong oxidizers (e.g., concentrated HNO₃) or halogenated hydrocarbons is not recommended.
Does the pipette support reverse pipetting?
Yes—the plunger mechanism allows precise control of both forward and reverse pipetting techniques, essential for viscous or foaming liquids.
How is traceability maintained during autoclaving?
Each unit bears a laser-etched permanent serial number unaffected by steam sterilization; calibration reports include pre- and post-autoclave verification data per ISO 8655-2 Clause 7.3.