Jihepu SX2-2.5-10T Benchtop Muffle Furnace

Overview

The Jihepu SX2-2.5-10T is a compact, benchtop-rated box-type muffle furnace engineered for precise, repeatable thermal processing in academic laboratories, quality control environments, and small-scale industrial R&D settings. It operates on resistive heating principles, utilizing high-purity Fe-Cr-Al alloy heating elements embedded within a thermally insulated chamber to deliver uniform temperature distribution across its 2-liter cavity. Designed for operation from ambient temperature up to 1000°C—with recommended continuous use limited to 900°C—the furnace meets fundamental requirements for ashing, annealing, calcination, sintering, and heat treatment of ceramic, metallic, and polymeric samples. Its robust construction integrates a monolithic furnace body with proprietary multi-point door sealing technology, minimizing thermal leakage and improving energy efficiency while maintaining safe external surface temperatures during extended operation.

Key Features

• Monolithic one-piece furnace body design ensures structural integrity, thermal stability, and long-term dimensional consistency under repeated thermal cycling.
• High-efficiency Fe-Cr-Al heating elements (Ganghua brand) provide consistent resistivity, low oxidation rate at elevated temperatures, and extended service life—critical for routine daily use in regulated lab environments.
• Patented multi-directional door sealing system eliminates hot gas escape, reduces ambient heat loss by >15% compared to conventional latch-based designs, and complies with ISO 17025-recommended thermal containment practices.
• Digital PID temperature controller delivers ±1°C accuracy over the full operating range; optional 30- or 60-step programmable controllers support complex thermal profiles required for ASTM E1131 (thermogravimetric analysis) pre-conditioning or USP <631> residue-on-ignition protocols.
• Internally lined with T-series advanced refractory ceramic fiber insulation—low thermal conductivity (≤0.09 W/m·K at 800°C), minimal outgassing, and no binder volatilization—ensuring clean, contamination-free thermal environments suitable for trace metal analysis sample preparation.

Sample Compatibility & Compliance

The SX2-2.5-10T accommodates standard crucibles (alumina, quartz, platinum, stainless steel) up to Ø80 mm × 60 mm height, supporting gravimetric procedures per ISO 2171 (cereal ash content), AOAC 942.05 (food ashing), and EPA Method 3010A (solid waste ignition loss). Its sealed muffle architecture isolates samples from combustion byproducts and external atmosphere, enabling inert-atmosphere-compatible operation when purged with N₂ or Ar (requires optional gas inlet kit). The furnace conforms to IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity), and its temperature uniformity profile (±5°C at 900°C, measured per ASTM E220) supports GLP-compliant calibration documentation. All electrical components meet CE marking requirements for low-voltage directive (2014/35/EU).

Software & Data Management

While the base configuration includes a non-programmable digital controller with manual setpoint adjustment, the optional 30- or 60-segment programmable module features RS485 Modbus RTU output for integration into centralized laboratory data acquisition systems. Logged temperature data—including ramp/soak events, dwell times, and real-time deviation from setpoint—can be exported in CSV format for audit trails compliant with FDA 21 CFR Part 11 (when paired with validated third-party software). Firmware supports password-protected parameter locking and event-triggered logging (e.g., door open/close, overtemperature alarm), fulfilling essential requirements for GMP-aligned environmental monitoring systems.

Applications

• Residue-on-ignition testing in pharmaceutical excipient qualification (USP <631>).
• Ash content determination in food, feed, and soil samples (AOAC, ISO, EPA methods).
• Pre-treatment of catalyst supports and battery electrode materials prior to BET surface area analysis.
• Thermal stabilization of reference standards and calibration weights.
• Low-mass thermal cycling for sensor element aging studies in metrology labs.
• Controlled pyrolysis of polymer films for FTIR residue characterization.

FAQ

What is the maximum recommended continuous operating temperature?
The furnace is rated for continuous operation up to 900°C. Operation at 1000°C is permissible only for short-duration processes (≤30 minutes) and requires strict adherence to cooling ramp protocols to preserve heating element longevity.
Can this furnace be used under inert gas atmosphere?
Yes—when equipped with an optional gas inlet/outlet port kit, it supports N₂ or Ar purging to maintain oxygen-free conditions during heat treatment of oxidation-sensitive materials.
Is temperature uniformity validated across the chamber?
Per internal verification per ASTM E220 methodology, temperature variation is ≤±5°C at 900°C across the usable load zone (center ±25 mm in all axes); full validation reports are available upon request.
Does the unit include calibration documentation?
A factory-as-tested calibration certificate (traceable to NIM, China) is supplied with each unit; on-site IQ/OQ documentation packages can be provided for regulated environments.
What safety certifications does the furnace carry?
It complies with IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and carries CE marking for EMC and Low Voltage Directives.