Narishige MF2 Microforge System
| Origin | Japan |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported Instrument |
| Model | MF2 |
| Price | Upon Request |
Overview
The Narishige MF2 Microforge System is a precision-engineered benchtop instrument designed for the controlled thermal shaping of glass micropipettes and microelectrodes under direct optical observation. Operating on the principle of localized resistive heating—via a precisely positioned platinum-iridium filament heater—the MF2 enables reproducible fabrication of fine-tipped structures including patch-clamp electrodes, intracellular injection needles, cell-attachment probes, and electrophysiological recording electrodes. Integrated within a rigid, compact stereomicroscope platform (total magnification up to 525× with optional lens configurations), the system supports real-time visual feedback during tip modification. All critical manipulations—including pipette positioning, heater alignment, and angular orientation—are executed via calibrated micrometer-driven controls, ensuring sub-micron repeatability and mechanical stability essential for high-impedance seal formation and low-noise electrophysiology.
Key Features
- Integrated high-stability stereomicroscope with coaxial coarse/fine focus (Y-axis: 30 mm travel) and orthogonal X/Z micromanipulation (X: ±5° tilt; Z: 3° fine adjustment)
- Dual independent manipulators: heater stage (X/Y/Z: ±14 mm each) and pipette holder (X: ±12 mm, Z: ±28 mm), both equipped with backlash-free micrometer knobs
- Foot-switch–controlled resistive heater (PT-B type, replaceable) with digital temperature readout for process traceability
- Adjustable LED illumination (continuously variable intensity) optimized for high-contrast visualization of glass tip geometry
- Optional interchangeable optical modules: MF2-LS1 (50×/100×, 5×/10× objective + 10× eyepiece) and MF2-LS2 (75×/525×, 5×/35× objective + 15× eyepiece), each including calibrated reticle eyepieces for angular measurement
- Robust aluminum-alloy chassis (210 × 300 × 280 mm, 5.8 kg) with vibration-damping silicone base pads (HI01PK01 included)
Sample Compatibility & Compliance
The MF2 accommodates standard borosilicate or quartz capillaries with outer diameters of 1.0 mm, 1.2 mm, and 1.5 mm—compatible with common puller outputs (e.g., Sutter P-1000, Narishige PC-10). Its flame-polishing, bending, tip-cutting, and front-end tapering capabilities meet established fabrication protocols for patch-clamp electrode preparation per ASTM F2961 (Standard Guide for Electrophysiological Electrode Fabrication) and ISO 13485–aligned laboratory workflows. The foot-switch activation, digital heater display, and mechanical locking mechanisms support GLP-compliant documentation of fabrication parameters. While not FDA 21 CFR Part 11–certified as a standalone device, the system’s deterministic, operator-independent motion control and repeatable thermal profiles facilitate audit-ready electrode manufacturing in regulated neurophysiology and reproductive biology labs.
Software & Data Management
The MF2 is a fully manual, hardware-controlled system with no embedded firmware or software interface. Heater activation status and approximate thermal output are conveyed via front-panel digital display (non-recordable). Process documentation relies on external lab notebooks or LIMS integration—consistent with traditional microelectrode fabrication standards where physical parameter logs (capillary OD, heater position, dwell time, observed tip geometry) constitute the primary quality record. Optional reticle eyepieces enable direct angular measurement and manual annotation of tip morphology, supporting ISO/IEC 17025–compliant calibration traceability when used with certified reference micrometers.
Applications
- Preparation of high-resistance (>1 GΩ) patch-clamp electrodes for single-channel recording and whole-cell configuration
- Fabrication of sharp intracellular injection pipettes with minimized backflow and reduced cytoplasmic leakage in embryonic or oocyte microinjection
- Manufacturing of fire-polished cell-attachment needles for micromanipulation in IVF and assisted reproductive technology (ART)
- Trimming and sharpening of glass microelectrodes used in extracellular field potential mapping and chronic implant studies
- Controlled tapering and beveling of recording electrodes for improved signal-to-noise ratio in in vivo electrophysiology
- Routine maintenance of pipette tip geometry following repeated use in automated patch-clamp rigs
FAQ
What capillary sizes are compatible with the MF2?
The system accepts standard borosilicate or quartz capillaries with outer diameters of 1.0 mm, 1.2 mm, and 1.5 mm.
Is the microscope included with the base MF2 unit?
Yes—the MF2 includes a fixed-focus stereomicroscope body; however, objective lenses and eyepieces are sold separately as configurable kits (e.g., MF2-LS1, MF2-LS2).
Can the heater temperature be digitally logged or exported?
No—the digital display provides real-time heater status only; no data logging, USB output, or network connectivity is available.
Does the MF2 require calibration prior to use?
No formal calibration is required; however, angular accuracy of reticle-equipped eyepieces should be verified using NIST-traceable stage micrometers per lab SOPs.
What safety certifications does the MF2 hold?
The instrument complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and carries CE marking for EMC and low-voltage directive compliance.
