Thermo Fisher Invitrogen Power Blotter Rapid Semi-Dry Protein Transfer System
| Brand | Thermo Fisher |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | Power Blotter Rapid Semi-Dry Protein Transfer System |
| Pricing | Available Upon Request |
Overview
The Thermo Fisher Invitrogen Power Blotter Rapid Semi-Dry Protein Transfer System is an engineered semi-dry electrophoretic transfer platform designed for high-efficiency, reproducible protein migration from polyacrylamide gels to solid-phase membranes—including nitrocellulose (NC) and polyvinylidene difluoride (PVDF). Leveraging constant-current-driven electroblotting principles, the system achieves rapid, uniform protein transfer within 5–10 minutes—significantly reducing processing time compared to conventional wet-transfer methods (typically 60–90 min at 25 V/1.0 A). Its architecture integrates a built-in programmable power supply, capacitive LCD touchscreen interface, and thermally stabilized electrode plates to ensure consistent field distribution across the gel-membrane sandwich. The system operates on standard Towbin transfer buffer (25 mM Tris, 192 mM glycine, 20% methanol) and is compatible with phosphate-affinity electrophoresis matrices such as Phos-tag™ SDS-PAGE gels, enabling efficient transfer of phosphorylated plant and crop proteins without denaturation or loss of post-translational modification integrity.
Key Features
- Integrated constant-current power supply delivering precise 1.3 A output with automatic time-based termination (5, 7, or 10 min presets per molecular weight range)
- Capacitive touchscreen interface with intuitive menu navigation, real-time status feedback, and user-defined protocol storage
- Dual-cassette design supporting two formats: mini (8 × 10 cm) and midi (13.5 × 15 cm) gel dimensions—enabling flexible throughput scaling
- Optimized thermal management system minimizing Joule heating during high-current transfer, preserving epitope integrity and membrane binding capacity
- Universal compatibility with third-party consumables—including custom-cut NC/PVDF membranes, filter papers, and pre-cast gels—while also supporting Thermo Fisher’s proprietary high-retention transfer kits
Sample Compatibility & Compliance
The Power Blotter accommodates a broad spectrum of electrophoretic formats: standard SDS-PAGE, Bis-Tris gels, gradient gels (4–20%, 8–16%), and specialty matrices including Phos-tag™, Zymogram, and Blue Native PAGE gels. It supports transfer of proteins ranging from 250 kDa (e.g., titin fragments), with optimized protocols validated per ISO/IEC 17025-aligned laboratory practices. While not certified under FDA 21 CFR Part 11, the system’s protocol logging and timestamped run records support GLP-compliant documentation workflows when integrated with LIMS or electronic lab notebook (ELN) platforms. All consumables meet ISO 10993-5 cytotoxicity standards for research-grade use.
Software & Data Management
The embedded firmware enables local storage of up to 50 user-defined transfer protocols, each configurable for current (A), duration (min), and buffer type selection. Run logs—including start/end timestamps, applied current, and cassette size—are exportable via USB flash drive in CSV format for audit trail generation. No cloud connectivity or remote access functionality is included; data residency remains fully on-device, aligning with institutional IT security policies for sensitive research environments. Protocol validation reports can be generated manually for internal SOP compliance review or external accreditation audits (e.g., AAALAC, CAP).
Applications
- Routine Western blotting in academic and industrial protein expression labs
- High-throughput phosphoproteomics workflows using Phos-tag™ gels in plant physiology and agrigenomics studies
- Quality control of recombinant therapeutic proteins (e.g., monoclonal antibodies, fusion proteins) during upstream/downstream process development
- Validation of CRISPR/Cas9-mediated gene editing outcomes via targeted protein knockdown assessment
- Preparative transfer for downstream mass spectrometry analysis where membrane-bound protein recovery must retain native conformation
FAQ
What is the maximum gel thickness supported by the Power Blotter?
The system is validated for gels up to 1.5 mm thick; thicker gels may require extended transfer time or voltage adjustment and are not covered under standard protocol recommendations.
Can I use this system with low-methanol or methanol-free transfer buffers?
Yes—buffer composition can be customized, though performance validation (e.g., transfer efficiency, background signal) must be conducted empirically for non-standard formulations.
Is the touchscreen interface compatible with glove use in biosafety cabinets?
The capacitive screen responds reliably to standard nitrile and latex gloves; no stylus is required.
Does the system support dual-voltage or ramped-current protocols?
No—the firmware implements only fixed-current, time-limited protocols; advanced waveform programming is not available.
Are service contracts and calibration certificates available?
Yes—Thermo Fisher offers annual preventive maintenance plans and NIST-traceable electrical calibration services through authorized service centers in mainland China.
