Description
Test of respiratory masks better than the standard with additionally exact analysis of filter mask efficiency for SARS-CoV-2 (size approx. 120 nm up to 160 nm). 8 size channels for efficiency from 100nm and 180 nm.
• Test rig working principle better than EN 143, EN 149 and EN 13274-7
• Equivalent to GB 2626 and 42 CFR 84 by additional software option
• Fullfills additionally the requirements according to GB 2626 (Filter efficiency, CD 2000 discharge unit is required)
• Testing of fractional efficiency, e.g. efficiency in whole size range of 100 nm up to 40 µm
• Exact analysis of filter and filter mask efficiency for SARS-CoV-2 (size approx. 120 nm up to 160 nm) in the size range between 100nm and 180 nm we have 8 size channels
• Future proof: Works with any kind of aerosol without adjustments
• Further measurement of differential pressure, e.g. as well within different face velocities
• Face velocity adjustable between 1.5 – 50 cm/s
Product capable of fast quality assurance AND continuous optimization in R&D (display of size distribution)
• Individual face mask adapter for your product
• Attractive 2 years maintenance package for availability of test rig
PMFT 1000 is based on Palas® MFP 1000.
Pictured: Analysis of filter and filter mask efficiency for Corona Virus
The size distribution of the test aerosol according to the standard is as follows:
Oil: Geom. standard deviation 1,8 | Median diameter 301 nm
Pictured: DEHS size distribution
NaCl: Geom. standard deviation 2,1 | Median diameter 63nm
Pictured: NaCl size distribution
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 |
