Gester Instruments | Professional Textile, Footwear and PPE Testing Equipments Manufacturers Since 1997
What is an oxygen index meter?
Devices that measure the oxygen index are called oxygen index meters, which can measure the oxygen index of a variety of materials such as plastics, rubber, textile fabrics, wood, foam, and other polymeric materials. The instrument is mainly composed of a combustion cylinder, a sample holder, a gas source, a flow meter and a control part. Specimen holder: used to vertically support the specimen in the center of the combustion cylinder. For self-supporting materials, the grip should be at least 15mm away from the nearest point to which the test specimen may be burnt. For films or sheets, use a frame with two vertical sides to support the specimen, and mark lines 20 mm and 100 mm from the top of the frame. Clamps and support borders should be smooth to minimize disturbance to the updraft. Gas source: Oxygen and/or nitrogen and/or clean air [containing oxygen 20.9% (volume fraction)] with a purity (mass fraction) of not less than 98% can be used as the gas source. Combustion cylinder: It is composed of a heat-resistant glass cylinder which is vertically fixed on the base and can introduce oxygen-containing mixed gas. The preferred combustor size is height (500±50) mm, inner diameter (75~100) mm. Timer: measuring time up to 5min, accuracy±0.5s. Smoke exhaust system: There are ventilation and exhaust facilities, which can remove the soot or ash particles in the combustion cylinder, but cannot interfere with the gas flow rate and temperature in the combustion cylinder. Flow measurement and control system: It is composed of pressure gauge, pressure regulator valve, pipeline and rotor flowmeter. The metered oxygen and nitrogen gas enter the combustion cylinder from the air inlet at the bottom of the combustion cylinder after passing through the gas mixer. Igniter: consists of one end with a diameter of 2mm±It consists of a 1mm tube that can be inserted into the combustion cylinder and ignited by a flame. The fuel for the flame should be propane unmixed with air. When the tube is inserted vertically, the combustion supply should be adjusted so that the flame shoots 16mm vertically downward from the outlet±4mm. Is a professional testing instrument manufacturer, focusing on the research and development of textile testing instruments, including: plastic oxygen index tester, high temperature oxygen index tester, limiting oxygen index tester, intelligent oxygen index tester, etc., and also actively expand testing in other industries The diversified product structure of the instrument makes it always maintain a dominant position in the increasingly competitive market, and can fully meet the increasingly complex and diversified needs of customers.
However, with the increased prevalence of textile testing equipment, it has become far more affordable.
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Simultaneously being able to offer not only the product but also the service, gives the customer a quality 'one-stop-shop' service.
The Heat Contact Machine GT-C101 is a specialized testing instrument designed for evaluating the heat resistance and thermal protective performance of gloves, protective clothing, and other heat-resistant materials used in high-temperature environments. In industries such as smelting, casting, welding, and glass manufacturing, workers are frequently exposed to intense heat, making accurate testing of contact heat resistance essential for ensuring safety and compliance.
GT-C101 simulates real working conditions by measuring heat transfer delay and thermal transmission under instant contact with high-temperature surfaces. Fully compliant with EN 407, EN 702, and ISO 12127-1 standards, this machine provides precise, repeatable data for manufacturers, laboratories, and research institutions. With high-temperature capability up to 500°C, advanced calorimetry, digital monitoring, and adjustable contact speed, the Heat Contact Machine GT-C101 is an indispensable tool for developing and certifying next-generation PPE and heat-insulation materials.
Ball Burst Method (ASTM D3787): Steel ball penetration for textiles/films using testers like GT-C02-2.
Hydraulic Method (ISO 13938.1): Fluid pressure on rubber diaphragm for industrial fabrics via GT-C12A.
Pneumatic Method (ISO 13938.2): Compressed air for breathable materials tested with GT-C12B.
Results are influenced by raw materials, yarn properties,
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