Jiubin Instruments JB-GF Forced-Air Drying Oven
| Brand | Jiubin Instruments |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | JB-GF |
| Instrument Type | General-Purpose Forced-Air Oven |
| Temperature Range | RT to 200 °C |
| Temperature Uniformity | ±1 °C |
| External Dimensions | 450 × 450 × 500 mm |
| Internal Chamber Dimensions | 300 × 300 × 350 mm |
| Interior Material | Stainless Steel (AISI 304) |
| Heating Method | Electric Resistive Heating |
| Temperature Control Resolution | 0.1 °C |
| Timer Range | 1–9999 min |
| Viewing Window | Double-Layer Heat-Resistant Glass |
Overview
The Jiubin Instruments JB-GF Forced-Air Drying Oven is an entry-level yet robust benchtop convection oven engineered for precise thermal stabilization, moisture removal, sterilization pre-treatment, and routine drying applications in academic, industrial, and quality control laboratories. It operates on the principle of forced-air convection—using a centrifugal blower to circulate heated air uniformly across the chamber—ensuring improved temperature homogeneity and faster equilibration compared to natural-convection ovens. Designed for reliability under continuous operation, the JB-GF meets foundational requirements for ISO/IEC 17025-compliant labs performing non-critical thermal processes, including sample conditioning prior to gravimetric analysis, polymer film drying, glassware pre-baking, and pharmaceutical excipient moisture reduction per USP <645>. Its RT to 200 °C operating range accommodates standard drying protocols without exceeding Class B oven safety thresholds defined in IEC 61010-1.
Key Features
- Stainless steel (AISI 304) interior chamber with seamless welded corners for corrosion resistance and easy decontamination
- Digital PID temperature controller with 0.1 °C resolution and adjustable ramp-soak profiles via front-panel interface
- Independent over-temperature protection circuit (mechanical backup cut-off at 220 °C) compliant with EN 60519-2 safety guidelines for heating equipment
- High-efficiency axial blower delivering ≥0.8 m/s air velocity at chamber center—validated per ASTM E145 Annex A3 for forced-air uniformity
- Double-layer aluminosilicate glass viewing window with low thermal transmittance (U-value ≤1.8 W/m²·K), minimizing heat loss while enabling real-time process observation
- Front-access door with magnetic seal and adjustable hinge tension to maintain consistent chamber integrity during frequent loading/unloading cycles
Sample Compatibility & Compliance
The JB-GF supports a broad spectrum of non-volatile, non-explosive, and non-hygroscopic samples—including metal parts, ceramic substrates, filter papers, petri dishes, aluminum weighing boats, and pre-weighed polymer pellets. It is not intended for solvent-based or flammable material drying. Chamber volume (31.5 L) and internal dimensions (300 × 300 × 350 mm) allow simultaneous processing of up to twelve 100-mm Petri dishes or six standard 500-mL beakers. The unit conforms to CE marking requirements under the Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU). While not certified to GLP/GMP standards out-of-the-box, its digital logging-capable controller (optional RS485 interface) supports audit-ready data capture when integrated with validated third-party software meeting FDA 21 CFR Part 11 requirements.
Software & Data Management
The JB-GF features a standalone microprocessor-based controller with no embedded OS or network stack. All operational parameters—including setpoint, actual temperature, elapsed time, and timer status—are displayed on a 4-digit LED screen. For traceable recordkeeping, optional analog output (0–5 V / 4–20 mA) enables connection to external chart recorders or SCADA systems. An RS485 port (Modbus RTU protocol) is available as a factory-installed option, permitting integration into centralized lab monitoring platforms. Temperature deviation logs can be exported manually via USB after firmware update (v2.1+), supporting basic trend analysis in Excel-compatible CSV format—sufficient for internal QC documentation under ISO 9001 Clause 8.5.2.
Applications
- Pre-drying of analytical filters (e.g., GF/C, PTFE membranes) prior to gravimetric particulate matter analysis (EPA Method 201A)
- Conditioning of reference standards and calibration weights in metrology labs per ISO 17025 clause 6.4.1
- Curing of epoxy-coated electrical components in aerospace QA workflows
- Moisture equilibrium stabilization of hygroscopic powders before FTIR or XRD characterization
- Baking of glassware and stainless steel tools to remove residual organics prior to trace-metal analysis (ASTM D5176)
- Thermal aging of polymer films for accelerated stability testing (ISO 11358-1)
FAQ
Is the JB-GF suitable for drying samples containing volatile organic solvents?
No. This model lacks explosion-proof construction, solvent recovery systems, or inert gas purging capability. Use only for aqueous or non-flammable matrices.
Can temperature uniformity be verified and documented?
Yes. The chamber complies with ASTM E145 Class II uniformity specifications (±1 °C at 100 °C). Users may perform IQ/OQ using calibrated NIST-traceable PT100 probes placed at 9 standardized locations (per ISO 17025 Annex A.3).
Does the oven support programmable multi-step temperature ramps?
The base controller supports single-setpoint operation with timer hold functionality. Multi-segment ramping requires optional firmware upgrade (JB-GF-PRO v3.0) and external PC configuration.
What maintenance intervals are recommended for sustained accuracy?
Blower motor lubrication every 12 months; door gasket inspection quarterly; temperature sensor calibration annually against a certified reference thermometer (e.g., Fluke 1523).
Is technical documentation available in English with regulatory references?
Yes. Full English-language user manual, EC Declaration of Conformity, and test reports (including temperature uniformity validation data) are provided upon request and included in shipment.
