ZuoFei Qinggeng 8 Automated Multi-Channel Microplate Dispenser

Overview

The ZuoFei Qinggeng 8 Automated Multi-Channel Microplate Dispenser is a benchtop liquid handling platform engineered for precision, reproducibility, and operational flexibility in high-throughput life science laboratories. It employs peristaltic pump technology—a contactless, positive-displacement mechanism—to deliver consistent volumetric dispensing across multiple wells without cross-contamination or carryover. Unlike syringe- or air-displacement-based systems, the peristaltic principle eliminates the need for internal fluid pathways within the instrument body; instead, disposable tubing forms the only wetted surface, enabling rapid changeover between reagent types and robust decontamination protocols. Designed specifically for assay setup, serial dilution, cell plating, and bead-based assay preparation, the Qinggeng 8 integrates seamlessly into workflows requiring repeatable sub-10 µL to milliliter-scale transfers across SBS-standard microplates and auxiliary tube formats.

Key Features

• Eight independent peristaltic channels with synchronized dispensing control and column-wise pattern selection—enabling targeted delivery to any combination of columns across 24-, 48-, 96-, or 384-well plates.
• Motorized Z-axis plate height adjustment ensures precise nozzle-to-plate clearance across variable plate geometries, including deep-well plates and racked cryovials (0.5–2.0 mL).
• Modular, tool-free tubing assembly with quick-release connectors and autoclavable components—supports ISO 13485-aligned cleaning validation and GLP-compliant reuse protocols.
• Integrated auto-cleaning cycle with programmable rinse volume, dwell time, and aspiration speed—configured per protocol to minimize residual carryover below detection limits.
• High-resolution capacitive touchscreen interface with intuitive workflow navigation, preloaded method templates, and on-device audit trail logging (user ID, timestamp, parameter settings, execution status).
• Compact footprint (W × D × H: 320 × 410 × 340 mm) optimized for shared lab environments and biosafety cabinet integration.

Sample Compatibility & Compliance

The Qinggeng 8 accommodates all SBS-standard microplate formats (ANSI/SBS 1–2004) without adapter modification. Its mechanical design supports standard-height (14.35 mm), low-profile (12.7 mm), and high-capacity (45 mm) plates, as well as 0.5–2.0 mL cryovials and 12–16 mm diameter sample tubes via optional holders. Fluid compatibility includes aqueous solutions (PBS, Tris-HCl, saline), viscous media (up to 15 cP at 25°C), mammalian cell suspensions (≤1 × 10⁶ cells/mL), and polystyrene or silica microbeads (1–10 µm diameter). All wetted materials comply with USP Class VI biocompatibility standards. The system meets IEC 61000-4 electromagnetic immunity requirements and operates within ISO 14644-1 Class 5 cleanroom-compatible conditions when used with appropriate tubing sterilization practices.

Software & Data Management

Control firmware supports standalone operation via touchscreen UI and optional PC connectivity via USB 2.0 or Ethernet. Method files (.qgf) store full dispensing parameters—including volume per well, column mask, pause intervals, cleaning cycles, and Z-height offsets—and are exportable for version-controlled archiving. Audit trail data is stored locally with tamper-resistant timestamps and user authentication logs, satisfying core elements of FDA 21 CFR Part 11 for electronic records (though full Part 11 compliance requires site-level IT validation and electronic signature implementation). Export options include CSV-formatted run reports and PDF summary sheets compatible with LIMS ingestion.

Applications

• ELISA and immunoassay plate coating (capture antibody, detection reagent, substrate)
• Cell-based assay seeding (adherent and suspension lines) across multi-well cytotoxicity or proliferation screens
• Serial dilution series generation for IC₅₀/EC₅₀ determination
• Microbead-based multiplex assays (e.g., Luminex-compatible workflows)
• QC sample preparation for mass spectrometry or NGS library normalization
• Automated buffer exchange in microscale purification workflows

FAQ

Does the Qinggeng 8 support bidirectional liquid handling (e.g., dispensing and aspiration)?
No—the Qinggeng 8 is a unidirectional dispenser optimized for high-fidelity forward transfer. Aspiration functions require external pipetting modules or manual intervention.
Can the peristaltic tubing be sterilized in an autoclave?
Yes—tubing sets are constructed from medical-grade silicone compliant with ISO 10993-1 and withstand standard 121°C, 15 psi, 20-minute autoclave cycles. Tubing replacement is recommended after 50–100 cycles depending on reagent corrosivity.
Is calibration traceable to NIST or other national standards?
Calibration is performed using gravimetric methods per ISO 8655-6, with traceability to certified reference weights calibrated against national metrology institutes. Certificate of Conformance is provided with each unit.
What maintenance intervals are recommended for routine operation?
Daily visual inspection of tubing integrity and nozzle alignment; weekly cleaning cycle verification; quarterly motor and sensor diagnostics via built-in self-test mode.
Are third-party plate carriers or adapters supported?
Yes—mechanical interface dimensions follow SBS specifications, allowing integration with commercially available carrier systems. Custom adapter design services are available under NDA.