NARISHIGE GJ-10 Magnetic Base
| Brand | NARISHIGE |
|---|---|
| Origin | Japan |
| Model | GJ-10 |
| Pillar Diameter | 12 mm |
| Pillar Length | 175 mm |
| Manipulator Mount Rod Diameter | 10 mm |
| Manipulator Mount Rod Length | 165 mm |
| Magnet Dimensions (W×D×H) | 50 × 65 × 55 mm |
| Total Height | 230 mm |
| Weight | 1.5 kg |
| Accessory Mounting Nut & Washer Dimensions (W×D×H) | 90 × 80 × 55 mm |
| Accessory Weight | 1.1 kg |
Overview
The NARISHIGE GJ-10 Magnetic Base is an engineered mechanical mounting solution designed for high-stability positioning of micromanipulators and other precision laboratory instruments in life science, electrophysiology, and microinjection workflows. It operates on the principle of permanent magnetic adhesion—utilizing a high-coercivity neodymium-iron-boron (NdFeB) magnet assembly to generate uniform, repeatable clamping force against ferromagnetic surfaces such as steel optical tables, vibration-damped platforms, or custom-built steel mounting plates (e.g., IP-series iron plates). Unlike vacuum or mechanical clamp alternatives, the GJ-10 provides rapid, tool-free attachment and repositioning without surface damage or residual marks. Its rigid stainless-steel pillar and precisely machined manipulator interface ensure minimal deflection under static load, making it suitable for applications requiring sub-micron positional stability during prolonged recordings or microinjection procedures.
Key Features
- Robust magnetic coupling: 50 × 65 × 55 mm NdFeB magnet block delivers consistent holding force across flat, clean ferrous surfaces (minimum recommended thickness: 6 mm steel)
- Modular pillar design: 12 mm diameter × 175 mm length vertical support rod with standardized M6 threading at top and bottom for secure integration with NARISHIGE manipulators (e.g., MN-4, MO-200) and compatible accessories
- Dedicated manipulator interface: 10 mm diameter × 165 mm length mounting rod with fine-pitch external thread (M10 × 0.75) optimized for coaxial alignment with ø10 mm shaft-type micromanipulators
- Compact footprint and low center of gravity: Overall height of 230 mm and total mass of 1.5 kg ensure resistance to torque-induced tipping during fine adjustment
- Universal compatibility: Designed to interface directly with NARISHIGE tilt bars (MP-1, MP-2, MLN-2) and steel sample stages; no proprietary adapters required
- Tool-free operation: Fast release via integrated lever mechanism—magnetic circuit is mechanically shunted to disengage adhesion without sliding or scraping
Sample Compatibility & Compliance
The GJ-10 is intended exclusively for use with ferromagnetic mounting substrates meeting ASTM A36 or equivalent structural steel specifications. It is not rated for non-ferrous, coated, or composite surfaces unless verified by user testing. While the device itself carries no electrical or optical functionality, its mechanical design complies with general laboratory safety standards for static load-bearing equipment (ISO 13857:2019 — safety distances to prevent hazard zones). No CE marking or FDA clearance applies, as the GJ-10 is classified as a passive mechanical accessory—not a medical device or measurement instrument. Users deploying the base in GLP/GMP-regulated environments should document its installation, calibration (via reference gauge blocks), and periodic inspection for magnet degradation or thread wear per internal SOPs.
Software & Data Management
The GJ-10 Magnetic Base is a fully mechanical, analog mounting component with no embedded electronics, firmware, or connectivity interfaces. Consequently, it does not require software drivers, firmware updates, or data logging capabilities. Integration into automated workflows relies entirely on external hardware coordination—for example, synchronizing manipulator position data (from compatible motorized controllers such as the MMO-202 or MX series) with imaging systems or electrophysiology acquisition platforms. All mechanical adjustments are manual and traceable via physical scale markings on associated manipulators; no audit trail or electronic record is generated by the base itself.
Applications
- Electrophysiological patch-clamp setups requiring stable, vibration-isolated positioning of pipette holders and micromanipulators
- Intracellular and extracellular microinjection platforms where precise angular orientation and repeatability are critical
- Confocal and two-photon microscopy rigs integrating multi-axis manipulators for live-cell targeting
- Developmental biology assays involving embryo handling, blastomere injection, or oocyte enucleation
- Custom-built optical trapping or laser ablation stations where modular, reconfigurable mounting is essential
- Educational laboratories teaching micromanipulation techniques due to its intuitive operation and robust build quality
FAQ
What steel plate thickness is required for optimal magnetic adhesion?
A minimum substrate thickness of 6 mm is recommended for full magnetic flux closure; thinner plates may result in reduced holding force and increased risk of slippage under lateral load.
Can the GJ-10 be used on stainless steel surfaces?
Only on ferritic or martensitic stainless steels (e.g., AISI 430, 410); austenitic grades (e.g., 304, 316) are non-magnetic and incompatible.
Is the mounting rod interchangeable with other NARISHIGE models?
Yes—the M10 × 0.75 thread standard enables compatibility with GJ-8, GJ-12, and third-party rods meeting ISO metric thread tolerances (6g external / 6H internal).
Does temperature affect magnetic performance?
Performance remains stable between 15–40 °C; exposure above 80 °C risks irreversible demagnetization of the NdFeB core.
How often should the magnet surface be cleaned?
Before each experimental session—use lint-free wipes and isopropyl alcohol to remove ferrous particulates that compromise contact integrity.
