LY WD-9413BX Gel Imaging System

Overview

The LY WD-9413BX Gel Imaging System is a dedicated benchtop instrument engineered for high-fidelity visualization, documentation, and quantitative analysis of nucleic acid and protein electrophoresis gels. It operates on the principle of UV-induced fluorescence detection: nucleic acids stained with ethidium bromide (EB) or SYBR dyes absorb UV light (primarily at 302 nm for transillumination) and re-emit visible light, which is captured by a high-sensitivity monochrome CCD sensor. The system integrates a fully enclosed dark chamber, eliminating dependence on external darkroom conditions and enabling consistent imaging under ambient laboratory lighting. Its optical architecture—featuring a 6× professional zoom lens, multi-layer EB-specific bandpass filter, and precisely calibrated UV and white-light sources—ensures optimal signal capture across agarose and polyacrylamide matrices while minimizing background scatter and photobleaching.

Key Features

• Enclosed dark box design: Enables reliable gel imaging without external darkroom requirements—ideal for shared core facilities and teaching labs.
• Modular drawer-style UV transilluminator: Facilitates rapid, contamination-free gel placement and retrieval; equipped with dual-wavelength reflected UV (254 nm and 365 nm) for crosslinking verification or alternative fluorophore excitation.
• Real-time preview and manual focus control: Allows precise framing and depth-of-field optimization prior to acquisition—critical for reproducible band quantification.
• High-performance 1.3 MP monochrome CCD camera (optional upgrade to 6.4 MP): Delivers 8-bit digital output with 62 dB signal-to-noise ratio and pixel dimensions of 5.2 µm × 5.2 µm for fine structural resolution.
• Adaptive exposure integration: Automatically adjusts integration time (1/100000–1/50 sec) and applies real-time contrast enhancement to preserve low-intensity bands without saturation of high-signal regions.
• Direct in-chamber gel excision capability: Integrated safety interlocks and ergonomic access support sterile, UV-shielded post-imaging sample handling.

Sample Compatibility & Compliance

The WD-9413BX accommodates standard electrophoretic formats including mini-gels (up to 10 × 10 cm), wide-format gels (up to 25 × 25 cm), and blot membranes. It supports common nucleic acid stains (EB, GelRed®, SYBR® Safe) and protein dyes (Coomassie Blue, Silver Stain). While not certified to ISO/IEC 17025 or FDA 21 CFR Part 11 out-of-the-box, its software architecture supports audit-trail-enabled operation when deployed in GLP/GMP-aligned environments using validated configurations. All UV components comply with IEC 62471 (Photobiological Safety of Lamps) for Class 1 risk assessment under normal use conditions.

Software & Data Management

The bundled professional analysis software provides native support for TIFF, JPEG, BMP, and GIF formats and features full interoperability with Microsoft Excel via dynamic data export. Core analytical modules include:

• 1D Electrophoresis Analysis: Automatic lane detection (including curved lanes), molecular weight calibration using reference ladders, integrated density quantification (net area, peak intensity, % volume), and migration distance (pixel-based) calculation.
• Dot Blot & Colony Counting: Threshold-based spot identification with adjustable size/shape filters and statistical reporting (CFU/mm², % inhibition).
• Image Enhancement Suite: Non-destructive brightness/contrast adjustment, grayscale normalization, rotation, mirroring, cropping, and annotation with scalable vectors (arrows, text, scale bars).
• Compliance-ready workflow logging: Timestamped acquisition metadata, user ID tagging, and parameter history tracking facilitate internal SOP adherence and regulatory review.

Applications

This system serves routine and advanced applications across academic research, clinical diagnostics, and biomanufacturing QC laboratories. Typical use cases include:

• Verification of PCR product size and amplification efficiency
• Assessment of restriction digest completeness and plasmid integrity
• Quantitative comparison of gene expression via RT-PCR or Northern blotting
• Protein purity evaluation following SDS-PAGE and Western transfer
• Colony screening in cloning workflows (e.g., blue-white selection)
• Documentation and archival of electrophoretic results for publication and regulatory submission

FAQ

Is the WD-9413BX compatible with SYBR Gold or other non-EB dyes?
Yes—the 302 nm transilluminator and multi-band UV reflectors provide broad spectral coverage suitable for SYBR Gold, SYBR Green I, and GelGreen. Optimal exposure times may require empirical adjustment.
Can the system perform densitometric analysis of Western blots?
Yes—its high-dynamic-range CCD and background subtraction algorithms support semi-quantitative analysis of chemiluminescent and chromogenic blots when used with appropriate substrates and exposure controls.
Does the software meet FDA 21 CFR Part 11 requirements?
The base software does not include electronic signature or audit trail modules by default; however, it can be deployed within validated IT infrastructure where administrative controls (e.g., password policies, change logs) are enforced per organizational SOPs.
What is the expected service life of the UV lamps?
The factory-installed UV tubes are rated for ≥2,000 hours of cumulative operation under standard duty cycles; replacement kits (part #411-3206-R) are available directly from LY authorized distributors.
Is remote operation supported?
The system operates as a USB-connected peripheral and does not natively support network streaming or web-based control; however, image acquisition and analysis can be scripted via Windows COM interface for integration into automated lab workflows.