Jianhu JH-Series Vacuum Drying Oven – Precision Benchtop Laboratory Vacuum Oven for Oxygen-Sensitive and Heat-Sensitive Applications
| Origin | Shenzhen, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Regional Origin | Domestic (PRC) |
| Model | JH-Series |
| Pricing | Available Upon Request |
Overview
The Jianhu JH-Series Vacuum Drying Oven is an engineered solution for controlled thermal processing under reduced-pressure environments. Operating on the fundamental principle of lowering the boiling point of solvents and moisture via vacuum application—typically down to ≤10 Pa—the oven enables gentle, uniform drying of thermolabile, oxidation-prone, or hygroscopic samples without thermal degradation. Unlike conventional convection ovens, this system eliminates atmospheric oxygen during heating, making it indispensable for applications requiring inert-atmosphere stabilization (e.g., nitrogen or argon purging), residual solvent removal from polymer films, pre-weighing preparation of reference standards, and post-synthesis drying of catalysts or battery electrode materials. Designed for compliance with laboratory-scale GLP workflows, the JH-Series integrates robust mechanical architecture with microprocessor-based thermal regulation to deliver repeatable, traceable, and documentation-ready drying cycles.
Key Features
- Rectangular stainless-steel (or brushed stainless-steel) working chamber maximizes usable volume while minimizing internal dead zones and ensuring uniform pressure distribution.
- Double-layer tempered safety glass door with integrated observation window provides real-time visual monitoring without compromising vacuum integrity; equipped with inert gas inlet port for controlled atmosphere purging (N₂, Ar).
- Adjustable door-latching mechanism and one-piece molded silicone door gasket ensure consistent sealing performance across repeated vacuum cycles, maintaining stable operating vacuum levels ≤10 Pa.
- Internally mounted heating elements—positioned on insulated chamber partition plates—eliminate external heat radiation losses and contribute to rapid thermal response and energy efficiency (measured as ≤5% deviation in chamber temperature uniformity per ASTM E2207).
- Microprocessor-based PID temperature controller offers ±0.5 °C accuracy over 25–250 °C range, with programmable ramp/soak profiles supporting multi-step drying protocols.
- Integrated direct-drive vacuum pump interface and electrically actuated vacuum isolation valve enable automated evacuation sequences and pressure-hold functionality.
Sample Compatibility & Compliance
The JH-Series accommodates a broad spectrum of sample formats—including Petri dishes, crucibles, glassware, metal trays, and custom fixtures—within standardized chamber volumes (e.g., 20 L, 30 L, 90 L, 100 L variants). It supports drying of pharmaceutical intermediates (per USP residual solvent guidance), nanomaterial precursors, lithium-ion cathode slurries, and biological tissue specimens where oxidative damage must be avoided. The system conforms to IEC 61010-1:2010 safety requirements for electrical equipment used in laboratory environments and meets structural design criteria aligned with ISO 14644-1 Class 8 cleanroom-compatible operation when installed with appropriate exhaust filtration.
Software & Data Management
While the base configuration utilizes standalone digital controllers, optional RS485/Modbus RTU communication enables integration into centralized lab management systems. Audit-trail-capable data logging (optional add-on module) records timestamped temperature, vacuum pressure, and cycle phase status—supporting 21 CFR Part 11-compliant electronic records when paired with validated software platforms. All firmware updates are delivered via secure USB interface, and calibration parameters are password-protected to preserve measurement integrity.
Applications
- Removal of trace solvents from organic synthesis products prior to NMR or HPLC analysis
- Drying of moisture-sensitive reference standards (e.g., certified reference materials per ISO/IEC 17025)
- Stabilization of air-sensitive metal-organic frameworks (MOFs) and perovskite thin films
- Pre-conditioning of desiccants and silica gel for gravimetric humidity calibration
- Accelerated aging studies of packaging barrier films under controlled low-oxygen conditions
- Post-curing degassing of epoxy composites and adhesive formulations
FAQ
What vacuum level can the JH-Series achieve?
The system achieves and maintains ≤10 Pa (≤0.075 Torr) using the integrated direct-coupled vacuum pump; ultimate pressure may vary slightly depending on ambient humidity and chamber load.
Is the temperature controller programmable?
Yes—the standard microprocessor controller supports up to 8-segment ramp-and-soak programs, with user-defined setpoints, dwell times, and rate limits.
Can inert gas be introduced during operation?
Yes—a dedicated gas inlet valve allows manual or automated introduction of nitrogen or argon; flow rate control requires external mass flow controller (not included).
Does the oven support validation documentation?
IQ/OQ documentation templates are available upon request; full PQ validation support requires collaboration with certified third-party service providers.
What maintenance is required for long-term vacuum integrity?
Routine inspection of the silicone door seal and periodic replacement every 12–18 months (depending on usage frequency) is recommended; vacuum pump oil changes follow manufacturer specifications (typically every 500 operational hours).
