Gester Instruments | Professional Textile, Footwear and PPE Testing Equipments 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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Cut resistance is one of the most critical performance indicators in personal protective equipment (PPE) testing, directly affecting worker safety in high-risk industries such as metal processing, machinery manufacturing, and emergency rescue. The TDM Cut Test Machine GT-KC28 plays a vital role in accurately evaluating the cut resistance of PPE products, including gloves, protective clothing, footwear materials, composite materials, rubber, and industrial textiles.
By adopting high-precision force control systems, intelligent data processing, and stable transmission technology, the GT-KC28 TDM Cut Tester can accurately measure the critical cutting force of materials and ensure excellent repeatability and comparability of test results. Its user-friendly touch-screen operation, comprehensive data storage, USB data export, and built-in thermal printer greatly improve laboratory efficiency and data traceability.
The TDM Cut Test Machine GT-KC28 fully complies with major international and national standards such as ISO 13997, EN 388, ASTM F2992/F2992M, ANSI/ISEA 105, and GB 24541-2022, making it a reliable solution for PPE manufacturers, third-party testing laboratories, and research institutions. Through precise and standardized cut resistance testing, the GT-KC28 helps reduce industrial cutting injuries, supports PPE certification across global markets, and ensures that protective equipment delivers reliable safety performance in real-world applications.
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