DLAB TopPette Single-Channel Adjustable-Volume Manual Pipette

Overview

The DLAB TopPette Single-Channel Adjustable-Volume Manual Pipette (Model: 0.1–2.5 µL) is an engineered solution for high-precision liquid handling in molecular biology, clinical diagnostics, and analytical chemistry laboratories. Designed around air displacement principle, this pipette delivers reproducible volumetric transfer across its full range with minimal operator-induced variability. Its ultra-low volume capability—down to 0.1 µL—enables accurate dispensing of precious reagents, genomic DNA samples, enzyme solutions, and nanoliter-scale assay components where even minor deviations critically affect downstream assay integrity. The instrument complies with ISO 8655-2:2022 (Piston-operated volumetric apparatus — Part 2: Piston pipettes) for metrological performance, and supports traceable calibration per ISO/IEC 17025 requirements when used with certified reference standards and documented procedures.

Key Features

• Ergonomic full-hand grip with contoured thumb rest and matte-textured polymer housing—reduces hand fatigue during extended use and improves control stability.
• Digital volume window with high-contrast numerals ensures unambiguous reading under standard laboratory lighting conditions.
• Rotary volume adjustment mechanism with tactile feedback and mechanical volume lock prevents inadvertent setting changes during operation or transport.
• Autoclavable lower assembly (tip cone, piston, and seal)—validated for 20 cycles at 121°C, 103 kPa, 20 minutes—ensures sterility for cell culture, PCR, and aseptic applications.
• Integrated hydrophobic filter in the tip cone prevents aerosol contamination and protects internal mechanisms from liquid ingress and corrosive vapors.
• Low-force, spring-assisted tip ejector minimizes wrist strain and eliminates need for excessive downward pressure—critical for repetitive tasks on 96-well plates or microcentrifuge tubes.
• Chemically resistant tip cone constructed from PTFE-coated stainless steel—compatible with common organic solvents (e.g., ethanol, isopropanol, DMSO), dilute acids/bases, and chaotropic agents.

Sample Compatibility & Compliance

The TopPette 0.1–2.5 µL pipette is validated for use with low-retention, sterile, filtered 10 µL tips meeting ANSI/SBS standards for dimensional consistency. It maintains accuracy and precision across viscosity ranges typical of aqueous buffers (e.g., TE, PBS), glycerol-containing enzyme stocks (up to 15% v/v), and diluted protein solutions (<5 mg/mL). All materials in contact with liquids comply with USP Class VI biocompatibility testing. The device supports GLP/GMP workflows through documented calibration records, maintenance logs, and user-accessible service intervals. While not electronically connected, its mechanical design allows integration into audit-ready SOPs aligned with FDA 21 CFR Part 11 expectations when paired with calibrated external balances and traceable reference fluids.

Software & Data Management

As a fully manual, non-electronic instrument, the TopPette does not incorporate embedded firmware, connectivity, or data logging capabilities. However, its design facilitates seamless inclusion in digital lab quality systems: calibration certificates (issued per ISO 8655-5) can be stored in LIMS or ELN platforms; maintenance history—including filter replacement dates and autoclave cycle logs—can be tracked via configurable electronic forms. DLAB provides downloadable calibration templates compatible with Microsoft Excel and LabWare LIMS, supporting automated uncertainty calculations per GUM (JCGM 100:2008). Service documentation adheres to ISO/IEC 17025 clause 6.4.9 for equipment verification records.

Applications

• Quantitative preparation of qPCR master mixes requiring sub-microliter enzyme or probe additions.
• Precision spotting of antibodies or antigens onto microarray slides.
• Serial dilution of CRISPR guide RNAs or synthetic oligonucleotides in nuclease-free environments.
• Dispensing of limited-volume standards in LC-MS/MS sample preparation workflows.
• Cell line transfection with lipid-based reagents where volume consistency directly impacts viability and transfection efficiency.
• Quality control testing of diagnostic kits involving low-concentration calibrators (e.g., viral RNA standards).

FAQ

Is the TopPette 0.1–2.5 µL pipette suitable for viscous or volatile liquids?
Yes—when used with pre-wetted low-retention tips and reverse pipetting technique, it achieves acceptable accuracy for liquids with viscosities up to 10 mPa·s (e.g., 10% glycerol in water). For highly volatile solvents (e.g., acetone, chloroform), use positive-displacement tips or dedicated positive-displacement pipettes.
Can this pipette be calibrated in-house?
Yes—DLAB supplies a dedicated calibration tool kit (Cat. No. CAL-KIT-TOP) with gravimetric verification protocol compliant with ISO 8655-6. Calibration requires an analytical balance (0.01 mg readability), Class A distilled water, and temperature-controlled environment (20–25°C, 40–60% RH).
What is the recommended service interval?
DLAB recommends full inspection and seal replacement every 12 months or after 10,000 pipetting cycles—whichever occurs first. Autoclaving frequency does not extend service life; repeated thermal cycling accelerates elastomer aging.
Does the pipette meet ISO 8655 certification out-of-box?
Each unit ships with a factory-verified performance certificate referencing ISO 8655-2 test parameters (accuracy, precision, leakage, tip fit). Full ISO 8655 compliance requires end-user verification under local environmental conditions and documented calibration.
Are spare parts available globally?
Yes—DLAB maintains regional distribution centers in North America, EU, and APAC. Critical spares (seals, filters, tip cones, volume selectors) are stocked with lead times ≤5 business days under standard shipping terms.