DLAB Levo Heavy-Duty Manual Pipette
| Brand | DLAB |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | Levo |
| Instrument Type | Single-Channel Manual Pipette |
| Automation Level | Manual |
| Channel Count | Single |
| Volume Range | 0.1–100 mL |
| Maximum Capacity | 100 mL |
| Accuracy | ±0.6% |
| Material | Corrosion-Resistant PVDF |
| Filter | Replaceable 3 µm Hydrophobic Membrane |
| Weight | 118 g |
| Aspiration Time | ≤4 s for 25 mL |
| Color Options | Blue, Green, Red, Yellow, Carolina Blue |
| Compatibility | Glass and Plastic Serological Pipettes (0.1–100 mL) |
Overview
The DLAB Levo Heavy-Duty Manual Pipette is an ergonomically engineered serological pipette controller designed for high-volume, repeatable liquid handling in clinical, pharmaceutical, and academic laboratories. Unlike conventional thumb-wheel or squeeze-bulb pipette aids, the Levo employs a precision-machined piston-driven air displacement mechanism coupled with a responsive trigger actuation system—enabling consistent, low-effort aspiration and dispensing across its full 0.1–100 mL range. Its operational principle relies on controlled negative pressure generation via a sealed, chemically inert PVDF body and integrated hydrophobic membrane filtration, ensuring reliable protection against aerosol contamination without compromising flow dynamics. The device is purpose-built for use with standard conical serological pipettes (both glass and polypropylene), supporting routine tasks such as cell culture media preparation, buffer dilution, reagent aliquoting, and sample transfer where volumetric fidelity and operator fatigue reduction are critical.
Key Features
- Ergonomic single-hand operation with intuitive trigger-based control—minimizes wrist strain during extended use
- Dual-mode dispensing: continuous flow for rapid bulk transfer and stepwise drop-by-drop mode for precise endpoint delivery
- Dedicated “last-drop ejection” button ensures complete expulsion of residual liquid from pipette tips—critical for viscous or surface-tension-sensitive solutions
- Integrated 3 µm hydrophobic PTFE filter provides robust aerosol barrier protection while maintaining low airflow resistance
- Ultra-lightweight construction (118 g) using medical-grade PVDF polymer—resistant to acids, bases, alcohols, and organic solvents
- Four-second aspiration time for 25 mL volume—optimized airflow path and low-friction internal seals enable rapid, laminar draw
- Fine-tuned liquid level adjustment dial allows real-time, tactile feedback during aspiration—eliminates overshoot and improves reproducibility
- Five distinct color-coded variants (Blue, Green, Red, Yellow, Carolina Blue) support visual workflow segregation per SOP or assay type
Sample Compatibility & Compliance
The Levo is validated for compatibility with all standard sterile and non-sterile serological pipettes ranging from 0.1 mL to 100 mL capacity—including those manufactured by Corning, Sarstedt, Eppendorf, and VWR. Its universal adapter interface accommodates both tapered and straight-shaft designs. All materials comply with ISO 10993-5 (cytotoxicity) and USP Class VI biocompatibility standards. The PVDF housing meets UL 94 V-0 flammability requirements. While classified as a Class I non-electrical laboratory aid under IEC 61010-1, the Levo supports GLP/GMP-aligned workflows through traceable calibration documentation (available upon request) and design features that facilitate cleaning validation per ASTM E3178-21.
Software & Data Management
As a fully manual, non-electronic instrument, the Levo does not incorporate embedded firmware, connectivity protocols, or digital data logging. However, its mechanical design enables seamless integration into regulated environments requiring audit-ready documentation: each unit carries a unique serial number engraved on the housing; calibration certificates—including accuracy verification at 10%, 50%, and 100% of nominal volume—can be issued compliant with ISO/IEC 17025 requirements. For labs operating under FDA 21 CFR Part 11, the Levo may be included in equipment master lists and maintenance logs without electronic signature dependency, reducing validation burden compared to motorized alternatives.
Applications
- Cell culture: Safe, contamination-controlled transfer of trypsin, growth media, and conditioned supernatants
- Diagnostic sample preparation: Accurate dispensing of serum, plasma, or urine into multiwell plates prior to ELISA or PCR setup
- Quality control labs: Reproducible volumetric delivery for titration standards, reference solution preparation, and QC batch sampling
- Bioprocessing: Scalable liquid handling during upstream seed train expansion and harvest clarification steps
- Teaching laboratories: Robust, intuitive tool for training students in aseptic technique and volumetric precision fundamentals
FAQ
What pipette sizes is the Levo compatible with?
The Levo is optimized for use with serological pipettes ranging from 0.1 mL to 100 mL, including both glass and autoclavable plastic variants.
Is the hydrophobic filter replaceable, and how often should it be changed?
Yes—the 3 µm PTFE filter is user-replaceable using standard service kits (Part No. F-LEVO-3UM). Replacement frequency depends on usage intensity and liquid properties; typical interval is every 3–6 months under moderate lab conditions.
Can the Levo be autoclaved?
No—the PVDF body and internal elastomers are not autoclave-compatible. Cleaning is performed via 70% ethanol wipe-down or immersion in mild detergent solutions, followed by air drying.
Does DLAB provide calibration services for the Levo?
Yes—traceable calibration services are available through DLAB’s authorized service centers, with certificates issued per ISO/IEC 17025:2017 and including uncertainty budgets.
How is accuracy verified across the full volume range?
Accuracy is tested gravimetrically using Class A volumetric flasks and certified analytical balances (±0.0001 g resolution), following ISO 8655-9 guidelines for manual pipette controllers.
