DLAB Levo Large-Volume Manual Pipette

Overview

The DLAB Levo Large-Volume Manual Pipette is an ergonomically engineered liquid handling tool designed for precise, repeatable, and fatigue-free dispensing across the full 0.1–100 mL range. Unlike traditional rubber bulbs or basic pipette fillers, the Levo operates on a positive-displacement aspiration principle—using controlled air displacement within a sealed, chemically inert PVDF body to drive consistent volume delivery. Its mechanical design eliminates reliance on user-applied thumb pressure variability, thereby reducing inter-operator error and improving reproducibility in routine volumetric transfers. The device is optimized for use with Class A and Class B glass and plastic serological pipettes (0.1–100 mL), supporting both forward and reverse pipetting techniques where required by protocol. It is widely deployed in QC laboratories, academic teaching labs, bioprocessing facilities, and environmental testing centers where high-volume, low-frequency transfers demand reliability without automation overhead.

Key Features

• Ergonomic single-hand operation with intuitive squeeze-and-release actuation—designed to minimize repetitive strain during extended use.
• Five distinct color-coded variants (Blue, Red, Green, Yellow, Carolina Blue) for visual identification and segregation of applications or reagent classes per lab SOPs.
• Quick-connect universal interface compatible with standard conical pipette tips across the entire 0.1–100 mL range—no adapters or calibration adjustments needed when switching volumes.
• Continuous aspiration mode enables uninterrupted liquid uptake without repeated insertion/removal of the pipette tip, significantly accelerating workflow in batch processing scenarios.
• Chemically resistant polyvinylidene fluoride (PVDF) housing provides exceptional durability against organic solvents, acids, bases, and oxidizing agents—ensuring long-term structural integrity and compliance with ISO 8573-1 for clean compressed air compatibility.
• Integrated 3.0 µm hydrophobic PTFE filter (optional accessory, Part No. 1700076) prevents aerosol contamination and protects internal mechanisms from moisture ingress during volatile solvent handling.

Sample Compatibility & Compliance

The Levo pipette is validated for use with borosilicate glass, polystyrene, and polypropylene serological pipettes meeting ASTM E538 and ISO 648 dimensional tolerances. Its accuracy specification of ±0.6% at full scale conforms to ISO 8655-3 (2022) requirements for manual piston-operated pipettes used in non-critical volumetric applications. While not certified for GLP/GMP-regulated environments requiring full traceability, the device supports audit-ready workflows when paired with documented calibration logs and filter replacement records. It meets CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and its PVDF construction complies with USP for pharmaceutical contact materials.

Software & Data Management

As a fully manual, non-electronic instrument, the Levo does not incorporate onboard memory, Bluetooth connectivity, or digital data logging. However, it integrates seamlessly into paper-based or LIMS-linked calibration management systems. Users may record usage frequency, filter change dates, and periodic verification results (e.g., gravimetric checks per ISO 8655-6) in standardized lab notebooks or electronic quality records. Its mechanical simplicity ensures zero firmware dependencies, eliminating cybersecurity concerns and ensuring uninterrupted operation during power outages or IT infrastructure downtime.

Applications

• Preparation of culture media and buffer dilutions in microbiology and cell culture labs.
• Volumetric transfer of reagents in environmental water analysis (e.g., EPA Method 200.7, 300.0).
• Standard addition spiking in ICP-OES and AAS sample preparation workflows.
• Serial dilution setup for ELISA and PCR master mix preparation where large-volume intermediate steps are required.
• Teaching laboratory demonstrations of volumetric technique fundamentals, including meniscus reading, tip immersion depth, and blow-out consistency.
• Pharmaceutical stability study sample pooling where regulatory-grade automation is unnecessary but precision remains essential.

FAQ

Is the Levo pipette autoclavable?
No—the PVDF body and internal elastomeric seals are not rated for steam sterilization. Clean with 70% ethanol or isopropanol and allow to air-dry. Do not immerse in aqueous cleaning baths.
Can it be used with viscous or volatile liquids?
Yes, when operated in reverse pipetting mode and fitted with the optional 3.0 µm PTFE filter. Avoid prolonged exposure to chlorinated solvents or concentrated HF, which may degrade PVDF over time.
Does it require routine calibration?
Per ISO 8655-5, manual pipettes used in regulated environments should undergo performance verification at least annually—or more frequently based on usage intensity and risk assessment. Gravimetric testing using distilled water at 20 °C is recommended.
What pipette sizes does the quick-connect interface support?
All standard conical-tipped serological pipettes from 0.1 mL through 100 mL, including brands such as Falcon, Sarstedt, and VWR, provided they conform to ISO 8573-1 tip geometry specifications.
Is technical support available outside China?
DLAB maintains authorized service partners in North America, EMEA, and APAC regions. Warranty coverage and spare parts distribution are managed through local distributors—not directly via Beijing headquarters.