Junyi JY-ZY2 Semi-Dry Electrophoretic Transfer Tank

Overview

The Junyi JY-ZY2 Semi-Dry Electrophoretic Transfer Tank is a compact, benchtop electrophoretic blotting system engineered for reliable and reproducible protein or nucleic acid transfer from polyacrylamide or agarose gels to solid supports—including nitrocellulose, PVDF, and nylon membranes. Unlike wet transfer systems requiring large buffer reservoirs and extended run times, the JY-ZY2 employs a semi-dry configuration in which filter papers saturated with transfer buffer serve as both conductive medium and thermal interface between gel/membrane stacks and electrode plates. This architecture enables efficient electroblotting at moderate DC voltages (typically 10–25 V), achieving complete transfer in 15–60 minutes depending on molecular weight and matrix composition. The unit is optimized for routine Western blotting, Southern/Northern hybridization workflows, and preparative membrane-based assays in academic research labs, quality control environments, and teaching facilities where space, energy efficiency, and operational safety are critical design constraints.

Key Features

• Optimized transfer area of 175 mm × 175 mm accommodates standard mini- and midi-format gels (e.g., 15 × 15 cm or 17 × 17 cm), supporting parallel processing of multiple samples per run.
• Integrated passive cooling mechanism—comprising thermally conductive electrode plates and strategically placed air channels—minimizes joule heating during prolonged or high-current transfers, preserving epitope integrity and reducing band distortion.
• Lid-activated safety interlock ensures automatic power disconnection upon opening, eliminating risk of accidental contact with live electrodes during gel loading or stack assembly.
• Ergonomic push-button lid release facilitates one-handed access while maintaining structural rigidity and alignment fidelity across repeated cycles.
• Electrically insulated safety leads with color-coded polarity connectors prevent miswiring and comply with IEC 61010-1 requirements for laboratory electrical equipment.
• Compact footprint (205 × 170 × 240 mm) and low net weight (2.3 kg) enable seamless integration into laminar flow hoods, cold rooms, or shared instrumentation benches without dedicated power conditioning.

Sample Compatibility & Compliance

The JY-ZY2 is compatible with standard SDS-PAGE, native PAGE, and agarose gels up to 1.5 mm thickness, and accepts common membrane types without modification. It supports standard transfer buffers (e.g., Towbin, CAPS, or low-pH glycine variants) and operates within typical semi-dry voltage ranges (10–25 V DC). While not certified to ISO/IEC 17025 or FDA 21 CFR Part 11 out-of-the-box, its mechanical safety architecture aligns with GLP-aligned lab practices—particularly when paired with documented SOPs for transfer validation (e.g., Ponceau S staining, reversible dye-based efficiency assessment). Users performing regulated work may implement audit-ready recordkeeping via external logging tools or integrate the device into validated workflows under institutional QA oversight.

Software & Data Management

The JY-ZY2 operates as a standalone hardware platform without embedded microcontroller or digital interface. No proprietary software, firmware updates, or data export capabilities are provided—consistent with industry-standard semi-dry transfer tanks designed for manual protocol execution and operator-controlled timing. All operational parameters (voltage, duration, buffer composition) are defined externally via power supply settings and documented in lab notebooks or electronic lab management systems (ELN). This architecture eliminates cybersecurity surface area and simplifies qualification for GxP environments where deterministic, non-programmable instrumentation is preferred.

Applications

• Primary protein transfer for Western blot analysis in cell lysate, tissue homogenate, and recombinant expression studies.
• Nucleic acid transfer for Southern and Northern blotting, especially with high-molecular-weight DNA fragments (>10 kb) where semi-dry conditions reduce shearing.
• Preparative membrane harvesting for downstream mass spectrometry sample preparation or antibody screening.
• Teaching laboratory implementation—robust construction, intuitive mechanics, and visual stack alignment aids support student training in fundamental blotting principles.
• QC testing of membrane binding efficiency and transfer linearity across gel positions using reference ladder controls.

FAQ

What buffer volume does the JY-ZY2 require during operation?

The JY-ZY2 is a semi-dry system and does not use bulk buffer reservoirs. Instead, it relies on 3–4 layers of filter paper (pre-wetted with 100–200 mL total transfer buffer) placed between electrodes and gel/membrane assemblies.
Can the JY-ZY2 accommodate thicker gels (e.g., 2.0 mm)?

It is rated for gels up to 1.5 mm thick. Use beyond this specification may compromise uniform current distribution and increase risk of arcing or incomplete transfer.
Is temperature monitoring supported?

No integrated sensor is included; however, the passive cooling design maintains stack temperature within ±2 °C of ambient under standard operating conditions (20–25 °C room temperature, ≤20 V, ≤1.2 A). For elevated ambient conditions, supplemental airflow is recommended.
Does the unit include electrodes?

Yes—stainless steel plate electrodes are permanently mounted and electrically isolated via molded polymer housing.
What power supply compatibility should be observed?

The JY-ZY2 requires a DC power supply capable of delivering 10–25 V and up to 2.0 A. Constant-voltage mode is recommended for consistent transfer kinetics.