Gester Instruments | Professional Textile Testing Equipment Manufacturers Since 1997
Types of masks and standard classification methods
The filter efficiency of a mask refers to the filter efficiency of melt blown. Because melt blown has the characteristics of filtering dust, particles, dust, pollen and so on. At present, there are several filtering effects as follows: 1. BFE95 explanation: When tested at a flow rate of 32 liters, the filtering effect of 3 micron bacterial particles reaches 95%. Gram weight: 18-30g2, BFE99 explanation: Detected at a flow rate of 32 liters, the filtering effect of 3 micron bacterial particles reaches 99%. Weight: 20-30g3, VFE99 Explanation: Detected at a flow rate of 32 liters, the filtering effect of 3 micron virus particles reaches 99%. Weight: 25-30g4, PFE99 Explanation: Detected at a flow rate of 32 liters, the filtering effect of 0.1 micron particles reaches 99%. Gram weight: 24-30g5, KN90 Explanation: Detected under 55 liters of flow, the filtration effect of 0.3 micron solid particles reaches 90%. Gram weight: 30-50g6, N95 Explanation: Detected under 85 liters of flow, the filtration effect of 0.3 micron solid particles reaches 95%. Gram weight: double layer 50g7, N99 Explanation: Detected under 85 liters of flow, the filtration effect of 0.3 micron solid particles reaches 99%. Weight: Double-layer 80g8, FFP1 Explanation: It is equivalent to the standard of N90. Weight: 50g9, FFP2 Explanation: It is equivalent to the standard of N95. Weight: 50g10, KN90: filtration efficiency: ≥90%11, KN95: filtration efficiency: ≥95%12, KN100: filtration efficiency: ≥99.97%13, KP90: oily filtration efficiency: ≥90%14, KP95: oily filtration Efficiency: ≥95%15, KP100: Oily filtration efficiency: ≥100%
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Even textile testing equipment are being made fine with advanced equipment.
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.
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