Description
呼吸面罩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 |
