Molecular Devices StakMax Plate Stacker
| Brand | Molecular Devices |
|---|---|
| Origin | USA |
| Manufacturer | Molecular Devices, Inc. |
| Product Category | Imported Laboratory Automation Equipment |
| Model | StakMax |
| Pricing | Available Upon Request |
Overview
The Molecular Devices StakMax Plate Stacker is an engineered plate-handling module designed to extend the automation capabilities of benchtop microplate readers and washers in life science, pharmaceutical, and clinical research laboratories. Operating on a precision stepper-motor-driven linear transport mechanism, the StakMax integrates seamlessly with SpectraMax® series microplate readers and compatible third-party instrumentation via standardized RS-232 or USB 2.0 communication protocols. Its core function is to automate the sequential loading, stacking, and unstacking of standard SBS-format microplates (96-, 384-, and 1536-well), enabling true walk-away operation for high-throughput assay workflows. Unlike standalone robotic arms or complex liquid handlers, the StakMax delivers targeted plate logistics without requiring dedicated robotics infrastructure—making it a cost-effective, space-efficient upgrade for labs scaling from manual to semi-automated operations.
Key Features
- Modular stack capacity options: configurable 20-, 40-, or 50-position plate stacks, supporting both full-stack and single-plate loading modes
- Integrated single-plate adapter for flexible assay setup, including calibration plates, controls, or low-volume test runs
- Optional integrated barcode reader (1D/2D) for plate identification, traceability, and audit-compliant sample tracking
- Bi-directional plate handling: supports both top-down and bottom-up stack access depending on instrument interface orientation
- SoftMax® Pro software integration enables synchronized control with SpectraMax readers—allowing automated plate queuing, run sequencing, and status feedback without external scripting
- Compact footprint (W × D × H: 30.5 × 40.6 × 35.6 cm) designed for benchtop deployment adjacent to existing readers or washers
- Robust mechanical architecture with stainless-steel guide rails and anti-slip plate retention surfaces to ensure positional repeatability across >10,000 cycles
Sample Compatibility & Compliance
The StakMax handles all ANSI/SBS-compliant microplates—including polypropylene, polystyrene, and cyclo-olefin copolymer (COC) formats—with deck heights ranging from 14.3 mm to 45 mm. It accommodates plates with or without lids (standard hinged or snap-on), provided lid height remains within 12 mm above plate rim. The system meets IEC 61000-6-2 (immunity) and IEC 61000-6-3 (emissions) standards for laboratory equipment. When used in regulated environments, its SoftMax® Pro–driven operation supports ALCOA+ data integrity principles; audit trails, user authentication, and electronic signatures are managed through the host software platform, aligning with FDA 21 CFR Part 11 requirements when deployed in validated configurations.
Software & Data Management
Control and monitoring occur exclusively through SoftMax® Pro v7.1 or later—a validated, Windows-based data acquisition and analysis suite certified for GLP/GMP applications. The StakMax appears as a native hardware module within the software’s Instrument Configuration Wizard. Users define plate order, stack priority, and error-handling policies (e.g., retry on misalignment, pause on sensor fault) via intuitive GUI dialogs. All plate movements are timestamped and logged in the experiment metadata file (.smx), ensuring full traceability for regulatory submissions. No proprietary drivers or middleware are required; communication uses ASCII command sets documented in the StakMax Hardware Interface Manual (Document #MD-SPM-008).
Applications
- High-throughput screening (HTS) campaigns requiring uninterrupted plate feeding to SpectraMax i3x or Paradigm readers
- ELISA, cell-based assays, and enzymatic kinetics where multi-plate batch processing improves statistical robustness
- Quality control testing in biomanufacturing, where barcode-tracked plate movement supports ISO 9001 documentation workflows
- Academic core facilities serving multiple users—enabling shared instrument scheduling with minimal operator intervention
- Method development studies evaluating plate-to-plate variability under identical environmental conditions
FAQ
Does the StakMax require dedicated IT infrastructure or network configuration?
No. It operates as a serial- or USB-connected peripheral and requires no IP address assignment, VLAN segmentation, or domain authentication.
Can the StakMax be retrofitted to older SpectraMax models?
Yes—hardware compatibility extends to SpectraMax M5, M5e, and Paradigm systems manufactured after 2008, provided SoftMax Pro v6.4+ is installed.
Is thermal regulation available for temperature-sensitive plates?
No. The StakMax is a non-climate-controlled module. For assays requiring ambient or controlled-temperature stacking, integration with external incubator drawers (e.g., StakMax + BioStack 4) is recommended.
What maintenance intervals are specified by Molecular Devices?
Annual visual inspection of belt tension and rail lubrication is advised; no scheduled calibration is required—the system relies on end-point optical sensors for positional verification.
How does the StakMax handle plates with non-standard barcodes or custom labeling?
The optional scanner supports GS1-128, Code 128, QR Code, and DataMatrix symbologies; custom regex parsing rules can be defined in SoftMax Pro for legacy label formats.
