PPE Testing Equipment Manufacturer | Safety Equipment Testing Machines | GESTER

Types of masks and standard classification methods

2021-05-21

Gester Instruments

362

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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GESTER International Co., Ltd. gains certificates of ISO 9001, 3A and SGS Audited supplier etc. with advanced design concept, excellent manufacturing technology and strict quality control.

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