Description
的测试结果优于标准。准确分析100 nm至40 µm过滤面罩效率。 SARS-CoV-2尺寸约120 nm-160 nm。8个尺寸通道可支持100 nm和180 nm测试。
• 试验台工作原理优于GB 2626，EN 143，EN 149和EN 13274-7
• 测试分数效率，例如100 nm至40 µm整个尺寸范围内的效率
• 我们共有8个尺寸通道，在100nm至180 nm之间的尺寸范围内，准确分析SARS-CoV-2（尺寸约120 nm至160 nm）的过滤器和过滤面罩效率
• 面向未来：无需调整即可与任何类型的气雾剂一起使用
• 进一步测量压差，例如，支持多种不同的面部流速
• 面部流速可在1.5-50cm/s之间调节
• 能够快速保证质量并在研发中不断优化的产品（显示尺寸分布）
• 适用于您产品的独立面罩适配器
• 有吸引力的2年维护包，可提供测试设备
PMFT 1000基于Palas®MFP 1000。
图为：冠状病毒过滤器和过滤面罩效率分析，根据标准进行的气溶胶测试尺寸分布如下：
石油：Geom。标准差1,8 |直径中值：301 nm
图为：DEHS尺寸分布
NaCl：Geom标准差2,1 |直径中值：63nm
图为：NaCl尺寸分布
Overview of standards for face mask penetration testing
EN 149 | EN 13274-7 | EN 13274-7 | GB 2626 | GB 2626 | 42 CFR 84 | 42 CFR 84 | |
|---|---|---|---|---|---|---|---|
Aerosol | see EN 13274-7 | NaCl | PaO | NaCl | PaO/DOP | NaCl | DOP |
Mean diameter | see EN 13274-7 | 0.06 – 0.1 µm | 0.29 – 0.45 µm | 0.055 – 0.095 µm | 0.165 – 0.205 µm | 0.055 – 0.095 µm | 0.165 – 0.205 µm |
Standard deviation | see EN 13274-7 | 2 – 3 | 1.6 – 2.2 | < 1.86 (by additional software module) | < 1.6 (by additional software module) | < 1.86 (by additional software module) | < 1.6 (by additional software module) |
Concentration | see EN 13274-7 | 4 –12 mg/m³ | 15 – 25 mg/m³ | < 200 mg/m³ | (50 mg/m³) < 200 mg/m³ | < 200 mg/m³ | < 200 mg/m³ |
Discharge | – | – | – | required | required | required | required |
Air flow | see EN 13274-7 | 95 l/min | 95 l/min | 85 ± 4 l/min | 85 ± 4 l/min | 85 ± 4 l/min | 85 ± 4.25 l/min |
Temperature | see EN 13274-7 | 22 ± 3 °C | – | 25 ± 5 °C | 25 ± 5 °C | 25 ± 5 °C | 25 ± 5 °C |
Rel. humidity | see EN 13274-7 | < 40 % | – | 20 – 40 % (by compressed air) | – | 20 – 40 % (by compressed air) | 20 – 40 % (by compressed air) |
Measurement device | see EN 13274-7 | Sodium flame photometer | Light scattering photometer | particle detector | particle detector | Light scattering photometer | Light scattering photometer |
Measuring time | see EN 13274-7 | 30 s | 30 s | lowest eff. during loading | lowest eff. during loading | lowest eff. during loading | lowest eff. during loading |
Pause time | see EN 13274-7 | 180 s | 180 s | lowest eff. during loading | lowest eff. during loading | lowest eff. during loading | lowest eff. during loading |
Exposition | 120 mg | 120 mg | 120 mg | 200 ± 5 mg | 200 ± 5 mg | 200 ± 5 mg | 200 ± 5 mg |
PMFT remarks | O.K. | O.K. | O.K. | O.K. with upgrade KIT | O.K. with upgrade KIT | O.K. with upgrade KIT | O.K. with upgrade KIT |