Le JBR20 Building Material Non-Combustibility Tester is a high-precision, computerized laboratory furnace designed to determine the absolute non-combustibility and thermal response of homogeneous building products and major components of non-homogeneous products under 750 °C exposure. Engineered strictly in accordance with OIN 1182:2020, GB/T 5464-2026, FR 8624-2025, et DANS 13501-1 (Euroclass A1/A2), this apparatus serves as the primary system for non-combustible material certification.
Featuring dual-loop temperature and power control, stage-regulated soft-start heating, automatic flame duration logging, and an optimized dual-thermocouple furnace setup, the JBR20 Non-Combustibility Furnace delivers exceptional accuracy and speed for insulation producers, fire safety inspection agencies, and accredited ISO 17025 test facilities.
Applicable Standards & Fire Classification Systems
This 750 °C vertical tube non-combustibility furnace enables certified testing facilities to conduct global flammability and material rating evaluations:
| Standard Code |
Standard Title & Scope |
Primary Testing Application |
| OIN 1182:2020 |
Reaction to fire tests for products — Non-combustibility test |
International benchmark procedure utilizing dual furnace thermocouples for critical non-combustibility verification |
| FR 8624-2025 & GB/T 5464-2026 |
Classification for burning behavior of building materials & Non-combustibility test method |
Mandatory Chinese national standardization testing for Class A1 and A2 non-combustible building product ratings |
| DANS 13501-1 / DANS 13238 |
Fire classification of construction products — Part 1: Euroclass A1 & A2 classification rules |
Mandatory CE marking non-combustibility evaluation for European construction material export certification |
| BS 476-4 & ASTM E136 |
Fire tests on building materials — Non-combustibility test in a vertical tube furnace at 750 °C |
British and North American building code compliance testing for structural non-combustible material status |
| IMO FTP Code Part 1 |
International Code for Application of Fire Test Procedures — Non-combustibility test |
Marine Equipment Directive (MED) compliance testing for marine bulkheads, decks, and insulation materials |
Key Technological Features of JBR20 Non-Combustibility Apparatus
- OIN 1182:2020 Dual Thermocouple Configuration: Fully complies with the latest international guidelines, utilizing two furnace-temperature thermocouples along with optional specimen surface and specimen center probes.
- Advanced Dual-Loop Control Algorithm: Advanced temperature and power dual-loop regulation ensures smooth automatic transitions from constant temperature to constant power without manual intervention.
- Precision Voltage & Power Compensation: Operates at standard 100 V heating voltage. Built-in power compensation keeps power fluctuations below 1% and empty furnace temperature variance under 2 °C even during mains voltage fluctuations.
- Soft-Start Heating Protection: Software-managed multi-stage heating curve prevents thermal shock to furnace heating elements, extending furnace core operational life.
- Automated Flame Logging & Data Analysis: Automatically detects and logs sustained flame duration, eliminating manual timing errors, and allows full raw data export and querying.
- All-Stainless Steel Body Construction: Heavy-duty, high-temperature-resistant stainless steel enclosure ensures corrosion resistance and reliable continuous testing.
Technical Specifications of JBR20 Non-Combustibility Tester
| Governing Standards |
OIN 1182:2020, GB/T 5464-2026, FR 8624-2025, DANS 13238, BS 476-4, ASTM E136 |
| Furnace Operating Range |
Ambient temperature to 1000 °C (Standard operational stabilization at 750 °C ± 5 °C) |
| Heating Voltage & Power |
0 to 100 V heating voltage; 0 to 1500 W variable heating power |
| Furnace Tube Dimensions |
Height: 150 ± 1 mm; Inner Diameter: 75 ± 1 mm; Wall Thickness: 10 ± 1 mm |
| Thermocouple Specifications |
Class 1 accuracy Type K (4 total: 2 furnace wall, 1 specimen center, 1 specimen surface); Wire Ø0.3 mm, Outer Ø1.5 mm |
| Specimen Dimensions |
Cylindrical Ø45 mm × 50 mm |
| Stabilization Warm-Up Time |
Rapid stabilization within 40 to 60 minutes to reach constant 750 °C operational state |
| Power Supply & Environment |
Single-phase AC 220 V ± 5%, 50 Hz; Ambient Temp: 23 ± 5 °C; Humidity: 50 ± 20% RH |
Testing Workflow & Non-Combustibility Assessment
Standardized Testing Procedure:
- Prepare standardized cylindrical test specimens measuring Ø45 mm × 50 mm in accordance with GB/T 40238 / DANS 13238 conditioning procedures.
- Power on the JBR20 apparatus and initiate the software-controlled soft-start ramp to stabilize the furnace furnace temperature at 750 °C (stabilization within 40–50 min).
- Mount the specimen inside the specimen holder and position thermocouples at the specimen center and surface if required.
- Lower the specimen holder into the center of the vertical tube furnace using the height-positioning stop block.
- The computerized software continuously records temperature curves (furnace, specimen center, specimen surface) and monitors for any flaming activity.
- Record the maximum temperature rise ($\Delta T$), mass loss percentage ($\Delta m$), and sustained flaming time ($t_f$) upon test completion.
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