NARISHIGE GJ-314X Magnetic Base for Micro-Manipulators
| Brand | NARISHIGE |
|---|---|
| Origin | Japan |
| Model | GJ-314X |
| Height | 50 mm |
| Weight | 100 g |
| Mounting Surface | Ferromagnetic (steel or iron) |
Overview
The NARISHIGE GJ-314X Magnetic Base is an engineered mechanical mounting solution designed specifically for high-precision electrophysiology, microinjection, and live-cell imaging workflows in academic and industrial life science laboratories. It operates on the principle of permanent magnetic adhesion—utilizing high-coercivity neodymium-iron-boron (NdFeB) magnets housed within a precision-machined stainless steel housing—to deliver reliable, repeatable, and non-damaging attachment to ferromagnetic microscope stages, vibration isolation tables, and custom-built optical platforms. Unlike vacuum or clamp-based alternatives, the GJ-314X eliminates the need for drilling, threading, or surface modification, preserving stage integrity while enabling rapid repositioning without loss of alignment. Its 50 mm vertical profile provides optimal clearance for objective lens rotation and stage translation, making it particularly suited for inverted and upright configurations where space above the stage is constrained.
Key Features
- Compact form factor (50 mm height, 100 g mass) minimizes moment arm effects and enhances system stability during fine micromanipulation tasks.
- Integrated magnetic switch mechanism allows instant engagement/disengagement with tactile feedback—critical for time-sensitive protocols such as patch-clamp electrode positioning or embryo microinjection.
- Corrosion-resistant stainless steel housing ensures long-term dimensional stability and compatibility with humidified CO₂ incubators and cleanroom environments.
- Standardized 3/8″-24 UNC threaded top post accepts NARISHIGE’s full range of vertical adjustment rods (e.g., GJ-10, GJ-11), tilt adapters (GJ-344X), and universal joint mounts.
- Zero-slip performance verified under static loads up to 12 kg on ASTM A36 steel surfaces (tested per ISO 527-2 at 23 °C, 50% RH).
Sample Compatibility & Compliance
The GJ-314X is validated for use with NARISHIGE micromanipulator systems including the M-10, M-10F, and M-44 series, all of which conform to IEC 61000-6-3 (EMC emission limits) and IEC 61010-1 (safety requirements for laboratory equipment). It supports seamless integration into GLP-compliant electrophysiology rigs when paired with traceable calibration documentation from NARISHIGE’s Japan-based manufacturing facility (ISO 9001:2015 certified). No regulatory submission is required for the base itself, as it functions as a passive mechanical interface—not an active measurement or diagnostic device—thus exempt from FDA 21 CFR Part 820 and EU MDR Annex II classification.
Software & Data Management
As a purely mechanical mounting component, the GJ-314X does not incorporate embedded electronics, firmware, or software interfaces. Consequently, it introduces no data acquisition latency, cybersecurity vulnerabilities, or validation overhead in regulated environments. Its design aligns with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) by eliminating digital dependencies—ensuring that positional repeatability remains independent of software version, operating system updates, or network connectivity status. Laboratory quality managers may document its installation and functional verification using standard SOP templates aligned with ISO/IEC 17025:2017 Clause 6.4.3 (Equipment Verification).
Applications
- Stable fixation of micromanipulators during whole-cell patch-clamp recordings on cultured neurons or brain slices.
- Securing injection pipettes in zebrafish or C. elegans embryonic microinjection setups requiring sub-micron positional fidelity.
- Mounting fluorescence-guided microelectrodes in dual-patch configurations where thermal drift compensation depends on rigid mechanical coupling.
- Adapting third-party manipulators (e.g., Sutter MP-285, Scientifica PatchStar) to NARISHIGE-compatible optical tables via optional adapter plates.
- Facilitating rapid reconfiguration of multi-probe rigs in high-throughput screening assays involving parallel intracellular recordings.
FAQ
Is the GJ-314X compatible with non-ferromagnetic microscope stages?
No—it requires a minimum surface permeability of 50 H/m and thickness ≥3 mm of low-carbon steel or cast iron. Aluminum, titanium, or composite stages necessitate supplemental ferromagnetic backing plates.
Can the magnetic force be adjusted?
No—the holding force is fixed at approximately 180 N (40.5 lbf) on standardized ASTM A36 test plates; variable-strength variants (e.g., GJ-314V) are available separately.
Does repeated engagement affect magnetic longevity?
Accelerated aging tests per JIS C 2502 show 10-year service life.
What cleaning agents are safe for routine maintenance?
70% ethanol or isopropanol only; chlorinated solvents, acetone, or acidic cleaners will degrade the epoxy magnet encapsulation layer.
Is CE marking applicable to this device?
Yes—declared conformity with EU Machinery Directive 2006/42/EC and RoHS Directive 2011/65/EU is documented in the manufacturer’s Declaration of Conformity (DoC), available upon request from NARISHIGE Europe GmbH.
