Digital Display Oxygen Index Tester
Product Overview
Our digital display oxygen index tester is professional flame retardancy testing laboratory equipment, fully manufactured to comply with GB/T 2406, ISO 4589 global standard specifications. This instrument calculates the Limiting Oxygen Index (LOI) - the minimum oxygen proportion required to sustain steady combustion of test samples inside an oxygen-nitrogen mixed airflow. It quantitatively evaluates the flame retardant, fire-resistant performance of diverse raw materials. It is widely deployed in third-party quality inspection labs, material science research institutes, university civil engineering laboratories, and production labs for plastic, rubber, textile, foam and construction board manufacturers.
Key Features
1. High-Precision Digital Data Display: Equipped with high-definition digital screen to real-time visualize oxygen concentration, gas flow rate and all critical testing parameters. Digital reading eliminates visual errors and subjective misjudgment from analog dials, delivering clear, traceable experimental data for official test reports.
2. Dual-Gauge Stable Gas Supply System: Built-in dual pressure gauges paired with precision pressure stabilizing valves for independent oxygen and nitrogen pipelines. The balanced gas circuit maintains consistent, stable airflow throughout the whole test cycle, greatly improving data repeatability and test result consistency for batch sample detection.
3. Comprehensive Safety Protection Structure: Anti-backfire & gas leakage prevention design blocks flame reverse burning and harmful gas escape during combustion tests. Transparent combustion cylinder adopts high-temperature & impact-resistant special glass, resistant to thermal shock and sample splashing. Sealed pipeline structure reduces gas waste and guarantees operator safety during long-hour continuous testing.
4. Wide Compatibility for Multiple Test Samples: Suitable for solid raw materials of different shapes and forms: rigid plastics, flexible rubber fabrics, polyurethane foams, wood panels, insulation boards, fiber textiles and composite building flame retardant materials. Only simple sample cutting is required to meet standard test dimensions.
5. Standardized, Compact Lab Layout: Integrated all-in-one bench-top design, small footprint to save laboratory counter space. Simple manual operation flow with minimal training required for lab technicians; spare parts and standard sample holders are fully stocked for after-sales support.
Main Application Industries
● Polymer Material Factories: Plastic, rubber, foam, fiber flame retardant grade testing.
● Construction & Decoration Material Labs: Fireproof board, thermal insulation material combustion performance inspection.
● Textile Industry: Fire-resistant clothing fabric, curtain textile LOI detection.
● Third-Party Testing Institutions: Official fire safety certification testing for export materials.
● Academic Research: Material flame retardant modification research, university teaching laboratory experiments.
Customization & Supporting Service
1. Custom upgraded automatic flow control version: Auto-adjust oxygen-nitrogen mixing ratio without manual valve tuning.
2. Matching supporting consumables: Standard test sample fixtures, combustion candles, sealing gaskets and high-temperature glass tubes.
3. OEM service: Custom logo printing on machine panel, customized operation manual in English/Spanish/Arabic for overseas dealers.
4. Complete lab matching set: Bundle sales with other fire testing instruments (horizontal vertical flammability tester, smoke density tester) with wholesale discount.
FAQ
Q1: What International Standards Does This Oxygen Index Tester Meet?
A1: Our machine strictly follows GB/T 2406 (Chinese national standard) and ISO 4589 international testing standard, fully eligible for fire safety testing reports required by global inspection authorities and export certification.
Q2: What Materials Can I Test With This LOI Tester?
A2: It fits most solid combustible materials: plastic, rubber, textile, foam sponge, wood, insulation boards, composite building panels, fiber materials. Liquid and powdery samples are not applicable for this model.
Q3: Is The Machine Difficult To Operate For New Lab Technicians?
A3: The operation workflow is straightforward with intuitive control knobs and digital readouts. We supply full English operation manual, step-by-step operation video and remote technical guidance. Standard batch testing only requires basic training within 30 minutes.
Q4: What Gas Supplies Are Needed To Run This Oxygen Index Tester Normally?
A4: You need two standard industrial gas cylinders: high-purity oxygen and high-purity nitrogen. Standard pressure reducing valves for gas cylinders are not included in the machine package; we can supply matched pressure regulators as optional accessories.
Q5: Do You Provide After-Sales Spare Parts And Global Maintenance Support?
A5: Yes. We stock all wearing spare parts such as high-temperature combustion tubes, sealing rings, sample holders and flow meters. We offer free online remote troubleshooting guidance worldwide, and supply replacement spare parts at factory cost with fast international shipping.
Company Profile
Hebei Wanluda Test Instrument & Equipment Co., Ltd. specializes in test instrument manufacturing. We are a modern integrated enterprise covering independent R&D, production, global sales and full after-sales services. Backed by outstanding technical strength and abundant industry experience, Wanluda delivers premium, diversified testing equipment and customized total solutions for clients worldwide. Our instruments are widely deployed in research institutes, industrial inspection labs, as well as highway, railway, bridge, construction, municipal, water conservancy, power, environmental protection and geological exploration sectors. Centered on customer demands, we keep technological innovation and strive to build a leading brand within the testing equipment industry.
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