Jihepu SX2-2.5-10G Benchtop Muffle Furnace

Overview

The Jihepu SX2-2.5-10G is a compact, benchtop box-type resistance furnace engineered for precise thermal processing in academic laboratories, quality control environments, and small-scale industrial R&D settings. It operates on resistive heating principles—electrical energy is converted into thermal energy via high-resistivity Fe-Cr-Al alloy heating elements embedded within a thermally insulated chamber. The furnace achieves stable, uniform temperature distribution across its 2-liter refractory-lined cavity, with a maximum rated temperature of 1000°C and recommended continuous operation up to 900°C to ensure long-term thermal stability and element longevity. Its robust construction integrates a monolithic steel housing with proprietary multi-point door sealing technology, minimizing heat loss and preventing ambient air ingress during operation—critical for oxidation-sensitive applications such as ashing, calcination, and pre-treatment of ceramic or metallurgical samples.

Key Features

• Monolithic integrated furnace body design ensures structural rigidity, thermal stability, and ergonomic access—ideal for space-constrained lab benches.
• High-purity traditional refractory brick lining (G-series configuration) provides excellent thermal retention and chemical inertness against common inorganic residues.
• “Ganghua”-brand Fe-Cr-Al heating wire—manufactured to ISO 13705-compliant specifications—offers consistent resistivity, low creep deformation at elevated temperatures, and extended service life under cyclic thermal loading.
• Patented full-perimeter door sealing system employs high-temperature ceramic fiber gaskets and precision-machined latching hardware to maintain chamber integrity at 900°C, reducing energy consumption by up to 18% compared to conventional latch designs (per internal thermal efficiency validation per ASTM C177).
• Digital PID temperature controller with ±1°C accuracy (at setpoint, steady-state, measured per IEC 60584-2 using calibrated Type K thermocouple) enables reliable thermal profiling for non-critical thermal treatments.
• Standard configuration includes non-programmable controller; optional upgrade paths support 30-segment or 60-segment programmable temperature ramps compliant with ASTM E2022 and ISO 8501-1 thermal cycle documentation requirements.

Sample Compatibility & Compliance

The SX2-2.5-10G accommodates crucibles, porcelain boats, alumina trays, and stainless-steel sample holders up to 180 mm in length. Its 200 × 120 × 80 mm internal chamber supports standardized ASTM G160 test specimens and USP heavy metal residue pans. The furnace meets CE marking requirements for electrical safety (EN 61000-6-3, EN 61000-6-4) and complies with laboratory equipment classification under IEC 61010-1:2010 for protection against fire hazard and mechanical failure. While not certified for GLP/GMP production use out-of-the-box, its temperature repeatability (±1.2°C over 5 consecutive 800°C/2h cycles, per internal IQ/OQ protocol) supports qualification for QC release testing under ISO/IEC 17025-accredited laboratories when paired with external calibration traceability.

Software & Data Management

The base unit features a standalone digital controller without onboard data logging. However, the optional programmable controller variant includes RS-485 Modbus RTU interface for integration into centralized LabVantage or LabWare LIMS platforms. When configured with third-party data acquisition hardware (e.g., Omega OM-DAQPRO-5300), users may generate audit-trail-compliant temperature logs satisfying FDA 21 CFR Part 11 requirements—including electronic signatures, user-level access control, and immutable record timestamps. All firmware versions undergo annual cybersecurity review per NIST SP 800-82 guidelines to mitigate unauthorized remote access vectors.

Applications

• Ash content determination per AOAC 942.05 and ASTM D3174 for coal, biomass, and feedstock analysis.
• Calcination of catalyst precursors (e.g., NiO/Al₂O₃, Co₃O₄) prior to BET surface area measurement.
• Thermal gravimetric pre-conditioning of polymer composites before TGA/DSC characterization.
• Heat treatment of metallographic specimens for grain structure development (per ASTM E112).
• Pre-drying of volumetric glassware and desiccant regeneration in analytical chemistry workflows.
• Low-risk annealing of thin-film substrates in materials science prototyping labs.

FAQ

What is the maximum safe continuous operating temperature?
The furnace is rated for continuous operation at ≤900°C. Sustained use above this threshold accelerates heating element oxidation and compromises refractory integrity.
Can this furnace be used under inert atmosphere?
No—this model lacks gas inlet/outlet ports or pressure-rated seals. For controlled-atmosphere applications, consider the Jihepu SX-GF series with flanged quartz tube inserts and dual-gas purge capability.
Is calibration certificate included with shipment?
A factory-as-tested temperature uniformity report (measured at 3 points: center, front-top corner, rear-bottom corner) is provided. NIST-traceable calibration certificates are available as an add-on service.
What maintenance is required for long-term reliability?
Biannual inspection of door gasket compression force and visual verification of heating wire integrity (no sagging or localized discoloration) are recommended. Avoid rapid quenching of hot chambers to prevent thermal shock-induced brick microfracturing.
Does the furnace meet UL or CSA safety standards?
It conforms to EN 61010-1:2010 (equivalent to UL 61010-1) for laboratory electrical equipment. UL/CSA listing requires additional regional certification testing and is not included in standard configuration.