NicePlate-20 Automated Agar and Media Dispensing System

Overview

The NicePlate-20 Automated Agar and Media Dispensing System is an engineered solution for precise, reproducible, and contamination-controlled dispensing of liquid microbiological growth media—including nutrient broths, agar solutions, and buffered saline—into standard Petri dishes and multi-well formats. Designed around a positive-displacement peristaltic pumping architecture and gravity-assisted thermal management, the system eliminates manual pouring while maintaining strict volumetric fidelity across variable viscosity profiles (e.g., molten agar at 45–50 °C vs. low-viscosity PBS). Its closed-loop dispensing workflow integrates real-time electronic logging, UV-C sterilization of the dispensing chamber, and programmable dish-handling mechanics—making it suitable for GLP-compliant microbial limit testing, pharmaceutical QC labs, food safety laboratories, and academic microbiology core facilities operating under ISO 17025 or USP / requirements.

Key Features

• Intuitive 10.1-inch capacitive touchscreen interface with multilingual support (English, Spanish, Chinese) and role-based user access control (Operator, Technician, Administrator)
• Preloaded dispensing protocols aligned with pharmacopeial standards (e.g., USP , EP 2.6.12), plus fully customizable parameter sets for volume, interval, dish count, temperature hold, and UV exposure duration
• Dual-mode dispensing architecture: integrated peristaltic pump for primary media delivery + optional secondary pump module for simultaneous addition of supplements (e.g., sterile blood, antibiotics, selective agents)
• Ergonomic dish-handling mechanism featuring spring-loaded arc-shaped dish supports enabling rapid loading/unloading of stacks up to 50 Ø90 mm plates without manual alignment
• Modular removable dish magazine (compatible with ISO-standard plate carriers) for offline pre-loading and seamless hot-swap operation during high-throughput runs
• Onboard 254 nm UV-C lamp (2.3 W output) with automatic interlock—activated only when chamber door is sealed—to decontaminate internal surfaces between cycles per ISO 15189 Annex A.4 guidelines
• Real-time audit trail generation compliant with FDA 21 CFR Part 11: timestamps, operator ID, parameter configurations, dispense events, error logs, and thermal/UV cycle verification—all exportable as CSV or PDF
• Thermal management options: optional Peltier-based cooling unit enables programmable post-dispense chilling (5–25 °C range, ±0.5 °C stability), reducing condensation and accelerating agar solidification without compromising gel integrity
• Integrated safety logic including flow obstruction detection, motor stall sensing, door-open interruption, overtemperature cutoff, and pressure anomaly alerts—enabling unattended overnight operation

Sample Compatibility & Compliance

The NicePlate-20 accommodates a broad spectrum of microbiological substrates: tryptic soy agar (TSA), Sabouraud dextrose agar (SDA), chromogenic media, R2A, and low-gelling-point formulations (e.g., 0.3–1.5% agarose). It supports Petri dish diameters from 35 mm to 90 mm and adjustable height settings (12–26 mm) to accommodate deep-well plates and specialized culture vessels. All wetted components are constructed from FDA-compliant, autoclavable materials (316L stainless steel tubing, silicone-free fluoropolymer pump heads, borosilicate glass reservoirs). The system meets IEC 61000-6-2/6-4 for electromagnetic compatibility and carries CE marking per Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. Validation documentation includes IQ/OQ templates aligned with GMP Annex 15 and ASTM E2500-13 principles.

Software & Data Management

Firmware v3.2+ delivers deterministic real-time control via embedded ARM Cortex-M7 processor with dual CAN bus redundancy. The system logs all critical process variables—including actual dispensed volume (via calibrated pulse counting), UV exposure duration, ambient temperature, and pump RPM—with millisecond timestamp resolution. Audit trails are digitally signed and stored in encrypted NAND flash memory (16 GB onboard, expandable via microSD). Data export supports direct USB transfer or networked SFTP push to LIMS (LabVantage, Thermo Fisher SampleManager, LabWare). Optional software add-ons include electronic signature modules (21 CFR Part 11 compliant), remote monitoring dashboards (HTTPS/TLS 1.3), and automated report generation with embedded digital signatures.

Applications

• Pharmaceutical microbial limit testing per USP , EP 2.6.12, and JP 4.05
• Environmental monitoring in cleanrooms (ISO 14644-1 Class 5–8) using settle plates and contact plates
• Food and beverage pathogen screening (e.g., Salmonella, Listeria, E. coli) requiring standardized plating density
• Bioburden assessment of medical devices and raw materials per ISO 11737-1
• Antibiotic susceptibility testing (AST) plate preparation with precise supplement co-dispensing
• Research-grade agarose gel casting for electrophoresis and colony isolation workflows

FAQ

What regulatory standards does the NicePlate-20 support for data integrity?

It provides full 21 CFR Part 11 compliance through electronic signatures, audit trail immutability, role-based access, and secure data export—validated per ASTM E2500-13.
Can the system dispense viscous media such as 1.5% molten agar at 48 °C?

Yes—the peristaltic pump is calibrated for viscosities up to 1500 mPa·s at 45 °C; thermal insulation of fluid paths minimizes premature gelling.
Is integration with LIMS or ELN systems supported?

Standard SFTP, HTTP REST API, and OPC UA interfaces enable bidirectional data exchange with major laboratory informatics platforms.
How is calibration verified and maintained?

Built-in gravimetric verification mode allows daily user-performed accuracy checks against NIST-traceable weights; calibration certificates are issued annually by accredited third-party labs.
Does the system require external compressed air or vacuum sources?

No—it operates entirely on standard 100–240 VAC / 50–60 Hz power; all motion and sensing functions are electrically driven.