Junyi JY1000E Electrophoresis Power Supply

Overview

The Junyi JY1000E Electrophoresis Power Supply is a precision-engineered DC power source designed for reproducible and compliant nucleic acid and protein electrophoresis applications in academic research laboratories, quality control environments, and diagnostic development workflows. It operates on the fundamental principle of controlled electric field generation across electrophoretic matrices—enabling separation of biomolecules based on charge-to-mass ratio under defined voltage, current, or power constraints. Unlike basic benchtop supplies, the JY1000E implements dual-core microprocessor-based closed-loop regulation to maintain setpoint fidelity across variable load conditions—including gel resistance shifts during extended runs or multi-gel configurations. Its architecture supports both standard slab gel systems (e.g., mini-PROTEAN, Hoefer SE260) and custom-built horizontal or vertical electrophoresis chambers, ensuring compatibility with common buffer systems (TAE, TBE, Tris-Glycine, SDS-PAGE running buffers) and electrode configurations.

Key Features

• Triple-mode output control: independently selectable constant voltage (30–1000 V), constant current (1–500 mA), or constant power (1–300 W), each with real-time feedback and auto-compensation
• High-resolution digital control: 1 V, 1 mA, and 1 W resolution enables precise method replication and inter-laboratory protocol transfer
• Intelligent stepwise programming: up to 10 programmable steps per method, supporting complex protocols such as gradient denaturation, pulse-field transitions, or multi-stage blotting transfers
• Real-time pause-and-adjust functionality: operators may modify voltage, current, or timer parameters during active runs without interrupting regulation integrity or introducing output drift
• Comprehensive safety architecture: integrated detection and automatic shutdown for open-circuit (no-load), short-circuit, ground-fault leakage (>10 mA), and thermal overload conditions
• Non-volatile memory storage: retains 100 user-defined electrophoresis methods with full parameter sets, including volt-hour accumulation tracking for cumulative exposure monitoring
• Backlit LCD interface with simultaneous display of target vs. actual output values—critical for GLP-aligned documentation and troubleshooting

Sample Compatibility & Compliance

The JY1000E is validated for use with standard polyacrylamide gels (PAGE, SDS-PAGE, native PAGE), agarose gels (including high-percentage and low-melt formulations), cellulose acetate membranes, and IEF strips. It supports both horizontal (e.g., submarine) and vertical (e.g., mini-VE, large-format vertical tanks) electrophoresis formats, accommodating single or parallel multi-gel setups via its four independent output terminal pairs. While not an FDA-cleared medical device, the unit meets IEC 61010-1:2010 requirements for laboratory electrical equipment safety and conforms to electromagnetic compatibility standards EN 61326-1:2013. Its programmable volt-hour logging and method recall capabilities support traceability needs aligned with ISO/IEC 17025:2017 clause 7.7 (control of equipment records) and internal SOPs requiring audit-ready parameter history.

Software & Data Management

The JY1000E operates as a standalone instrument with no proprietary PC software dependency; all configuration, execution, and data review occur directly via the front-panel interface. However, its structured parameter logging—including elapsed time, accumulated volt-hours, and final output state—is compatible with laboratory information management systems (LIMS) via manual entry or barcode-scanned method ID referencing. The 100-method memory includes timestamped creation metadata (not stored runtime logs), enabling retrospective verification of method selection and operator attribution where required under GLP or GMP frameworks. For regulated environments, users may integrate the JY1000E into broader electronic lab notebook (ELN) workflows by documenting run parameters alongside gel images and downstream analyses.

Applications

• Nucleic acid separation: DNA fragment analysis (100 bp–20 kb), plasmid QC, PCR product verification, RNA integrity assessment
• Protein electrophoresis: SDS-PAGE for molecular weight estimation, native PAGE for functional oligomer analysis, 2D electrophoresis first-dimension IEF
• Blotting support: optimized constant-current transfer for Western, Southern, and Northern hybridization protocols
• Seed purity testing: electrophoretic profiling of storage proteins or isozymes per ISTA and AOSA guidelines
• Preparative electrophoresis: scaled-up protein or nucleic acid isolation using custom high-capacity gel formats
• Educational labs: modular protocol teaching with visual feedback and error-state diagnostics to reinforce core biophysical principles

FAQ

What electrophoresis chamber models are compatible with the JY1000E?
The JY1000E interfaces with any chamber accepting standard banana-plug or alligator-clip connections and rated for ≤1000 V operation—including Bio-Rad Mini-PROTEAN, Thermo Fisher Owl E1, C.B.S. Scientific VE-180, and generic vertical/horizontal tanks.
Does the JY1000E support remote control or computer interfacing?
No. It is a fully self-contained instrument with no RS-232, USB, or Ethernet ports. All operations are performed locally via the front panel.
Can the JY1000E be used for pulse-field gel electrophoresis (PFGE)?
Not natively—it lacks programmable polarity reversal or asymmetric pulse timing. It supports only unidirectional DC output modes.
How does the volt-hour (V·h) function enhance experimental reproducibility?
V·h integrates field strength over time, serving as a more consistent metric than voltage alone when gel dimensions or buffer conductivity vary between runs—particularly valuable in regulatory documentation and cross-site method transfer.
Is calibration certification available for the JY1000E?
Junyi provides factory calibration documentation upon request. Users may perform in-house verification using NIST-traceable multimeters per ASTM E2914-13 (Standard Guide for Calibration of Electrophoresis Equipment).