Why Choose Qualitest for Your LOI Testing Needs
Qualitest is a globally recognized supplier of advanced flammability and materials-testing instruments, serving customers worldwide with one of the most comprehensive Limiting Oxygen Index Chamber portfolios available.
Three-Tier Portfolio — One Trusted Source
From the economical and versatile basic QualiLOI™, through the paramagnetic-precision QualiLOI-PM, to the flagship fully-automatic QualiLOI™-Auto with touchscreen interface and automatic cylinder-height adjustment — Qualitest offers a coordinated portfolio matching every laboratory size, throughput, budget, and automation requirement. A single trusted supplier simplifies procurement, training, sensor support, and standardization across your entire flammability-testing infrastructure.
Paramagnetic Oxygen Sensor Superiority
The QualiLOI™-PM and QualiLOI™-Auto incorporate paramagnetic Type oxygen sensors — non-depleting, long-lifespan technology maintaining roughly 0.1% measurement accuracy for years without sensor replacement. This eliminates the recurring sensor-replacement cost, calibration downtime, and progressive accuracy degradation that plague traditional electrochemical-sensor LOI testers — delivering dramatically lower total cost of ownership across the instrument lifecycle.
Full International Standards Compliance
Every QualiLOI™ platform is engineered to meet the most demanding global flammability-testing standards — ASTM D2863 (Standard Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics), ISO 4589-2 (Plastics — Determination of Burning Behaviour by Oxygen Index — Ambient-Temperature Test), and NES 714 (Naval Engineering Standard for combustion-performance testing) — ensuring every test result is universally accepted, audit-ready, and defensible in customer certifications and regulatory submissions.
Streamlined Automation Saves Time
The flagship QualiLOI™-Auto delivers one-click setting of oxygen percentage with automatic ratio display — eliminating manual gas-flow calculations, reducing per-test setup time, and removing operator-introduced calculation errors. Combined with automatic quartz-cylinder height adjustment for easy sample replacement, the QualiLOI™-Auto can dramatically increase laboratory throughput while reducing operator workload.
Versatile Sample Compatibility
Qualitest LOI chambers test the full breadth of combustible materials — plastics, rubber, fiber, foamed plastics, film, textile, wood, cables, and composites — with sample holders for both rigid (supportable) and flexible (unsupportable) specimens. High-temperature-resistant quartz glass cylinders withstand demanding test conditions across long-duration campaigns and elevated-temperature variants.
Adjustable Ignition for Repeatable Combustion
Every QualiLOI™ platform features a gas ignition device with adjustable flame-length control — ensuring consistent ignition geometry across every test, every operator, every batch. The QualiLOI™-Auto adds a gas-source cutoff capability for enhanced operator safety and precise gas-flow control during automated cycles.
Cost-Effective Value & Global Support
Qualitest delivers premium LOI testing performance at a transparent, competitive price point — backed by global service, training, calibration support, and worldwide stocked accessories. The economical QualiLOI™ basic model brings entry-level LOI capability within reach of universities and small QC labs, while the paramagnetic QualiLOI™-PM and QualiLOI™-Auto deliver the long-term lifecycle savings that high-volume regulatory laboratories require.
