What is the LOl Limiting Oxygen lndex chamber? The Limiting Oxygen Index (LOI) Chamber is a specialized instrument used to measure the minimum concentration of oxygen required to support combustion in a material. The LOI is an important property of materials used in various applications, such as aerospace, automotive, and construction, as it indicates their fire resistance and safety. The LOI Chamber works by measuring the oxygen concentration in a test chamber containing a sample of the material being tested, as the sample is exposed to a controlled flame. The chamber is initially filled with a mixture of oxygen and nitrogen gases, and the oxygen concentration is gradually reduced until the material is no longer able to sustain combustion. The LOI value is then calculated as the minimum oxygen concentration at which the material stops burning. The LOI Chamber is a highly accurate and reliable instrument for measuring fire resistance, as it provides a quantitative measurement of the material's ability to prevent or resist ignition and combustion. It is commonly used in quality control and research and development in industries such as plastics, textiles, and electronics. In addition to the LOI value, the LOI Chamber can also provide information on other fire-related properties of materials, such as the rate of flame spread and smoke generation. This information is critical for developing and testing materials that meet safety standards and regulations. #oxygenindextester #limitingoxygenindexapparatus #limitingoxygenindextestequipment #oxygenindextestinginstrument