DLAB TopPette Manual Multichannel Pipette
| Brand | DLAB Scientific |
|---|---|
| Origin | Beijing, China |
| Model | TopPette |
| Type | Manual Multichannel Pipette |
| Compliance | EN/ISO 8655–1 to –6 |
| Sterilization | Autoclavable (lower assembly, 121°C, 20 min) |
| Volume Range | 0.1 µL – 10 mL |
| Incremental Settings | From 0.05 µL (0.1–2.5 µL range) to 50 µL (2–10 mL range) |
| Accuracy (Max System Error) | 0.30%–3.00% depending on volume |
| Precision (Max Random Error) | 0.15%–2.50% depending on volume |
| Ergonomic Design | Low activation force, balanced weight distribution, thumb-rest geometry optimized for repetitive use |
| Calibration | Factory-calibrated per ISO 8655 |
Overview
The DLAB TopPette Manual Multichannel Pipette is an engineered solution for high-throughput, precision liquid handling in molecular biology, clinical diagnostics, pharmaceutical QC, and academic research laboratories. Designed and manufactured in Beijing under strict quality control protocols, the TopPette operates on a positive displacement piston principle—ensuring consistent volumetric delivery across its full 0.1 µL to 10 mL range. Unlike air-cushion pipettes susceptible to environmental variability, the TopPette’s robust internal mechanics minimize compressibility effects, delivering reproducible performance even with viscous, volatile, or temperature-sensitive samples. Each unit undergoes individual calibration against traceable standards in accordance with EN/ISO 8655–1 through –6, covering metrological requirements for accuracy, precision, linearity, and mechanical durability. The instrument is classified as a manual multichannel pipette—requiring operator actuation without motorized assistance—yet achieves performance metrics comparable to semi-automated platforms through precision-machined components and low-hysteresis spring mechanisms.
Key Features
- Ergonomic architecture: Lightweight body (≤125 g), low plunger activation force (<1.8 N), and contoured thumb rest reduce operator fatigue during extended use—validated per ISO 9241–5 and ANSI/HFES 100 human factors guidelines.
- Dual-scale digital volume display: Clear, non-reflective LCD window shows both nominal volume and increment step simultaneously, eliminating misreading during rapid protocol execution.
- Modular autoclavable design: The lower assembly—including tip cone, ejector, and sealing O-rings—is rated for repeated sterilization at 121°C for 20 minutes (EN 285 compliant), supporting GLP/GMP environments requiring routine decontamination.
- User-accessible calibration: Integrated adjustment screw and included calibration toolkit enable field recalibration without disassembly or third-party service—fully documented per ISO 8655–6 Annex B procedures.
- Chemical resistance: Piston shaft and internal seals are constructed from PTFE-coated stainless steel and FKM elastomers, ensuring compatibility with common solvents including ethanol, isopropanol, 70% v/v acetic acid, and diluted sodium hypochlorite.
- Multi-channel variants available: 8- and 12-channel configurations support standard 96-well and 384-well microplate formats, with independent channel alignment verification via integrated alignment gauge.
Sample Compatibility & Compliance
The TopPette accommodates aqueous buffers, cell suspensions, glycerol-containing reagents (up to 40% v/v), and PCR master mixes without measurable carryover or adsorption artifacts. Its piston-driven mechanism eliminates air cushion compression errors, making it suitable for high-viscosity liquids (e.g., 10,000 cP methylcellulose solutions) and low-surface-tension solvents (e.g., DMSO, acetone). All units comply with EN/ISO 8655–1 (general requirements), –2 (volumetric performance), –3 (test methods), –4 (calibration), –5 (quality assurance), and –6 (user maintenance). Documentation includes full traceability to NIST-traceable reference standards, and each pipette ships with a Certificate of Conformance and individual calibration report. For regulated environments, the device supports audit-ready records when used with DLAB’s optional electronic calibration logbook (compatible with FDA 21 CFR Part 11–compliant systems).
Software & Data Management
While the TopPette is a manual instrument without embedded firmware or connectivity, DLAB provides complementary software tools to support data integrity and compliance workflows. The free TopPette Calibration Manager (Windows/macOS) enables labs to digitally record calibration events, generate ISO-compliant uncertainty budgets, and export PDF reports with digital signatures. The software integrates with LIMS platforms via CSV/Excel import and supports configurable alert thresholds for out-of-specification drift detection. All calibration logs retain immutable timestamps, operator ID fields, and environmental condition inputs (temperature, humidity)—fulfilling ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) required under GLP and GMP frameworks.
Applications
- High-fidelity nucleic acid quantification and normalization prior to qPCR, NGS library prep, and CRISPR editing workflows.
- Reproducible dispensing of ELISA reagents, antibody conjugates, and enzyme substrates into microtiter plates—critical for assay Z’-factor stability.
- Cell-based assay setup, including seeding uniformity validation across 96-well adherent cultures using Trypan Blue exclusion counts.
- Standard curve preparation in pharmacokinetic analysis, where volumetric error propagation must remain below ±1.5% RSD over five-log concentration ranges.
- QC release testing of sterile injectables per USP and EP 2.6.1, where pipette accuracy directly impacts endotoxin dilution factor validity.
FAQ
Is the TopPette certified for ISO 8655 compliance?
Yes—each unit is individually tested and certified to EN/ISO 8655–1 through –6, with full documentation provided in the shipping package.
Can the entire pipette be autoclaved?
No—only the lower assembly (tip cone, ejector, and O-rings) is autoclavable at 121°C for 20 minutes. The upper housing contains non-heat-resistant polymers and must not be exposed to steam sterilization.
What is the recommended recalibration interval?
DLAB recommends quarterly calibration for routine use; monthly for high-frequency (>200 operations/day) or critical applications. Frequency should be justified by risk assessment per ISO/IEC 17025 Clause 7.7.
Does the TopPette support reverse pipetting?
Yes—the plunger travel allows deliberate over-aspiration for viscous or foaming liquids, with adjustable blow-out volume settings via the volume dial.
Are replacement parts available globally?
Yes—DLAB maintains ISO 13485–certified spare parts distribution centers in North America, EU, and APAC regions, with standard lead time of ≤5 business days for piston assemblies, seals, and tip cones.
