Chuanyu CHZDFY-8 High-Precision Automated Microplate Dispenser

Overview

The Chuanyu CHZDFY-8 High-Precision Automated Microplate Dispenser is an engineered solution for reproducible, low-volume liquid handling in high-throughput life science laboratories. Built upon a peristaltic pump architecture, the system delivers non-contact, contamination-minimized fluid transfer across standard 96-well microplates. Unlike positive-displacement or air-displacement pipetting systems, peristaltic pumping ensures consistent volumetric delivery without requiring calibration of disposable tips—reducing consumable cost and eliminating tip-to-tip variability. The instrument is designed for routine integration into ELISA workflows, pathogen screening protocols, food safety assays, veterinary diagnostics, and early-stage drug discovery pipelines where precision, traceability, and walk-away automation are critical. Its compact footprint (320 × 420 × 380 mm) and modular 8-channel head support seamless placement on benchtops adjacent to microplate readers, washers, or stackers.

Key Features

• Peristaltic pump-driven dispensing with dual-speed control (high/low flow rate), enabling optimized delivery for viscous or volatile reagents without droplet splashing or carryover.
• Motorized, software-controlled plate height adjustment accommodates plates of varying rim heights (e.g., shallow, standard, and deep-well 96-well formats) without manual intervention.
• 8-channel parallel dispensing head with independent tubing paths; all fluid-contact components are chemically resistant (Pharmed® BPT tubing) and autoclavable.
• Integrated auxiliary functions—including programmable plate shaking (amplitude/frequency configurable), pre-wet cycles to minimize surface tension effects, post-dispense liquid retraction to prevent dripping, and automatic carriage homing for positional repeatability.
• 7-inch capacitive touchscreen interface with intuitive icon-based navigation; method storage supports up to 100 user-defined protocols with version timestamping.
• Modular waste management: removable waste tray with optional continuous tubing connection to external waste reservoirs—compatible with vacuum-assisted aspiration systems.

Sample Compatibility & Compliance

The CHZDFY-8 is validated for use with aqueous buffers, serum-containing media, detergent solutions, and low-viscosity enzyme substrates (≤15 cP). It complies with ISO 8655-7 (volumetric accuracy verification for liquid handling devices) and supports GLP-compliant documentation via exported CSV log files containing timestamped dispense events, operator ID, protocol name, and volume confirmation flags. While not FDA 21 CFR Part 11–certified out-of-the-box, audit trail functionality (including user login, parameter changes, and run history) can be enabled and exported for internal quality review. All electrical components meet IEC 61010-1 safety standards for laboratory equipment.

Software & Data Management

The embedded firmware supports method creation via stepwise graphical workflow builder: users define plate layout, column selection mask, volume per well, dispense speed, and auxiliary actions per step. Exported run logs include UTC timestamps, total dispense time, channel-specific error codes (e.g., occlusion detection, motor stall), and pass/fail status against preset accuracy thresholds. Data files are saved in UTF-8 CSV format with no proprietary encryption—enabling direct import into LIMS, ELN, or statistical analysis platforms (e.g., JMP, GraphPad Prism). Firmware updates are delivered via USB flash drive with SHA-256 checksum verification.

Applications

• High-volume serological screening (e.g., anti-SARS-CoV-2 IgG ELISA setup across hundreds of samples per shift).
• Preparation of calibration curves and QC standards in food allergen testing (e.g., peanut, gluten immunoassays).
• Cell-based assay seeding and reagent addition in virology labs conducting avian influenza or African swine fever virus titration.
• Automated buffer exchange in microplate-based protein stability studies (e.g., DSF, nanoDSF).
• Supporting ISO/IEC 17025-accredited testing labs by providing documented, repeatable liquid handling for proficiency testing rounds.

FAQ

What types of microplates are supported?
Standard ANSI/SLAS-format 96-well plates (flat-bottom, U-bottom, V-bottom) with rim heights between 14.0–22.5 mm. Deep-well plates require optional spacer kit (sold separately).
Can the instrument handle viscous liquids such as glycerol or serum?
Yes—within viscosity limits of ≤15 cP at 20°C. For higher viscosities, low-speed mode and pre-wet cycles are recommended to maintain ≤2.0% CV at 200 µL.
Is tubing priming required before each run?
No. The firmware includes automated prime-and-purge sequences that execute during startup and between protocols, ensuring bubble-free operation.
How is calibration verified?
Users may perform gravimetric verification using Class S1 analytical balances per ISO 8655-7. A built-in calibration checklist guides operators through weight-based volume validation for each channel at three volumes (10 µL, 100 µL, 1000 µL).
Does the system support remote monitoring or network connectivity?
Not natively. However, USB-host mode allows connection to Windows PCs for log export and firmware updates. Ethernet or Wi-Fi modules are not integrated but may be added via third-party industrial gateways compliant with Modbus TCP.