ZONWON MT100 Automated Bulk Liquid Dispenser
| Brand | ZONWON |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | MT100 |
| Instrument Type | Multi-Channel Electronic Pipettor |
| Automation Level | Motorized |
| Maximum Dispensing Volume | 250 mL |
| Accuracy | ±1% |
| Display | High-Resolution Touchscreen |
| Connectivity | Wireless Handheld Pipette Integration & Remote Control Capability |
| Sample Tray Configuration | 8 × 10 positions (9 mL tubes, configurable) |
| Compliance | GB 4789–2020 (National Standard for Microbiological Examination of Food) |
Overview
The ZONWON MT100 Automated Bulk Liquid Dispenser is an electronically actuated, multi-channel liquid handling system engineered for high-throughput, quantitative dispensing in regulated laboratory environments. Operating on precision motor-driven piston displacement principles, the MT100 delivers repeatable volumetric delivery across standardized tube formats—primarily 9 mL sterile dilution tubes—without manual pipetting intervention. Unlike single-channel or semi-automated systems, the MT100 integrates fixed-position tray architecture with programmable dispensing logic, enabling batch-wise distribution of reagents, diluents, or culture media under defined volume and timing parameters. Its design prioritizes operational consistency in microbiological sample preparation workflows where reproducibility, traceability, and compliance with national food safety standards are non-negotiable requirements.
Key Features
- Motorized multi-channel dispensing engine with calibrated piston displacement mechanism ensuring ≤ ±1% volumetric accuracy at full-scale output (up to 250 mL per cycle)
- Configurable 8 × 10 position sample tray optimized for standard 9 mL screw-cap or snap-cap dilution tubes; tray is tool-free removable for rapid cleaning and sterilization
- Integrated high-resolution capacitive touchscreen interface supporting intuitive protocol creation, parameter adjustment, and real-time status monitoring
- Wireless compatibility with handheld electronic pipettes—enabling hybrid operation modes where handheld units synchronize with the main dispenser for flexible workflow segmentation
- Remote control capability via local network connection, permitting centralized management in multi-instrument laboratories and integration into LIMS-controlled environments
- Automated start/stop logic with pre-programmed pause points, emergency stop hardware switch, and audible/visual completion alerts to support unattended operation during routine dilution sequences
Sample Compatibility & Compliance
The MT100 is validated for use with aqueous buffers, saline solutions (e.g., 0.85% NaCl), nutrient broths, and other low-viscosity liquids commonly employed in food microbiology pre-enrichment and serial dilution protocols. It accommodates standard polypropylene or glass 9 mL dilution tubes conforming to ISO 7218 and GB 4789.2020 specifications. The system supports Good Laboratory Practice (GLP) documentation requirements through timestamped operation logs stored internally; while not inherently 21 CFR Part 11 compliant out-of-the-box, audit trail export functionality enables manual integration into validated data management systems used in accredited food testing laboratories.
Software & Data Management
The embedded firmware provides a dedicated protocol editor allowing users to define dispense volume, aspiration speed, dispense height, dwell time, and repetition count per channel group. All executed runs generate immutable session records—including date/time stamp, operator ID (if configured), selected protocol name, and final volume verification flag. Data export is supported via USB mass storage mode (CSV format), facilitating post-run analysis in Excel or statistical software. Firmware updates are delivered via offline SD card loading to maintain network isolation in secure lab environments.
Applications
- Routine serial dilution of food homogenates in accordance with GB 4789.2–2022 (Aerobic Plate Count) and GB 4789.10–2016 (Staphylococcus aureus enumeration)
- Preparation of standardized inoculum suspensions for antimicrobial susceptibility testing and challenge studies
- Bulk dispensing of enrichment media (e.g., Buffered Peptone Water, Tryptic Soy Broth) into primary culture tubes prior to incubation
- High-volume reagent distribution in QC labs performing shelf-life stability testing or raw material verification
- Supporting ISO/IEC 17025-accredited testing workflows where documented procedural consistency directly impacts measurement uncertainty budgets
FAQ
What is the minimum and maximum dispensing volume per channel?
The MT100 operates within a dynamic range determined by its piston calibration; while maximum capacity is 250 mL per full-cycle run, individual channel volumes are programmable from 1 mL to 250 mL in 0.1 mL increments.
Does the system support calibration verification according to ISO 8655?
Yes—the device includes built-in gravimetric verification mode compatible with Class A analytical balances, allowing end-users to perform periodic accuracy checks per ISO 8655-6 guidelines.
Can the MT100 be integrated into a laboratory information management system (LIMS)?
Direct API-level LIMS integration is not natively supported; however, exported CSV logs contain sufficient metadata (timestamp, protocol ID, volume, operator) for manual ingestion or middleware-based synchronization.
Is the sample tray autoclavable?
The standard polypropylene tray is rated for steam sterilization at 121°C for 20 minutes; users must remove electronic components and touchscreen assembly prior to autoclaving.
What maintenance is required for long-term reliability?
Recommended quarterly maintenance includes lubrication of piston seals, inspection of tubing integrity, and validation of touch screen responsiveness and wireless handshake stability with paired handheld pipettes.
