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Page 1
OSDH KN95 Mask Information
HD-01
Jiulizi KN95 Professional Protective
Mask, Nine particles medical equipment
co., ltd., Yongzhou city, Hunan province,
China
HD-02
HXFH100-003
HD-03
SHENZHEN WEIFA
TECHNOLOGY CO, LTD
HD-04
ZHONGCHEN KN95
face mask Model# ZC9595
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Page 2
HD-05
Maozheng
HD-06
No Brand, GB2626-2006
HD-07
Dongguan Modern
Childrens’s Products Co., Ltd
FAILED
HD-08
Jusenyuan
FAILED
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Page 3
HD-09
LEEPHC< (KN95)
HD-10
Shenzhen tianlong Century Tech
HD-11
Donqquan Hao Yang
carbon filter beating products
FAILED
HD-12
Gerson1730
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Page 4
HD-13
Gerson 2130
HD-14
Makrite
HD-15
Lamdown, KN95 Protection Level
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Page 5
HD-01 Mask
Add new blocks to this tab for other treatments
Pressure Drop,
''wg S1 S2 S3 S4 S5
Pressure
Drop,
''wg S1 S2 S3 S4 S5
Blank 0.242 0.243 0.243 0.244 0.244 Blank 0.232 0.236 0.236 0.239 0.240
With sample 0.416 0.403 0.422 0.403 0.439 With samp 0.400 0.405 0.430 0.417 0.411
ΔP 0.174 0.16 0.179 0.159 0.195 ΔP 0.168 0.169 0.194 0.178 0.171
Average 0.173 Average 0.176
SD 0.015 SD 0.011
S1 S2 S3 S4 S5 S1 S2 S3 S4 S5
Blank 3.11E+05 3.20E+05 3.22E+05 3.19E+05 3.17E+05 3.16E+05 Blank 3.16E+05 3.15E+05 3.10E+05 3.12E+05 2.99E+05 3.06E+05
Blank 3.22E+05 3.23E+05 3.22E+05 3.27E+05 3.18E+05 3.21E+05 Blank 3.17E+05 3.16E+05 3.19E+05 3.12E+05 3.12E+05 3.12E+05
Run-1 7.59E+03 5.46E+03 4.99e34.82 3.40E+03 5.78E+03 Run-1 4.48E+03 2.67E+03 4.27E+03 5.14E+03 6.91E+03
Run-2 7.57E+03 5.38E+03 4.82E+03 3.24E+03 5.84E+03 Run-2 4.60E+03 2.69E+03 4.31E+03 5.06E+03 6.80E+03
Run-3 7.76E+03 5.46E+03 4.79E+03 3.35E+03 5.65E+03 Run-3 4.34E+03 2.74E+03 4.31E+03 5.00E+03 6.53E+03
Run-4 7.64E+03 5.36E+03 4.85E+03 3.26E+03 5.67E+03 Run-4 4.62E+03 2.68E+03 4.34E+03 4.98E+03 6.80E+03
Filtration Efficiency 97.6% 98.3% 98.5% 99.0% 98.2% Filtration E 98.6% 99.1% 98.6% 98.4% 97.8%
Average 98.3% Average 98.5%
SD 0.5% SD 0.5%
Minimum 97.6% Minimum 97.8%
CI95 0.977033 0.989326 CI95 0.978975 0.991057
Overall Avg 98.4%
Overall SD 0.5%
CI95 98.1% 98.7%
Model and Brand Respirator/ materials tested:
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Page 6
HD-02 Mask
KN95 Self-priming filter anit-particle respirator, HXFH100-003
None, new
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.168 0.170 0.172 0.172 0.170
With sample 0.476 0.490 0.519 0.512 0.496
ΔP 0.308 0.32 0.347 0.34 0.326
Average 0.328
SD 0.016
S1 S2 S3 S4 S5
Blank 5.97E+04 5.35E+04 5.32E+04 5.29E+04 5.22E+04 5.18E+04
Blank 5.90E+04 5.31E+04 5.35E+04 5.28E+04 5.19E+04 5.15E+04
Run-1 4.06E+03 4.23E+03 5.33E+03 5.12E+03 4.68E+02
Run-2 4.04E+03 4.08E+03 5.19E+03 5.03E+03 4.47E+02
Run-3 3.98E+03 4.13E+03 5.34E+03 5.08E+03 4.66E+02
Run-4 3.81E+03 4.08E+03 5.46E+03 5.10E+03 4.66E+02
Filtration Efficiency 92.9% 92.3% 90.0% 90.3% 99.1%
Average 92.9%
SD 3.7%
Minimum 90.0%
CI95 88.3% 97.5%
Model and Brand Respirator/ materilas tested:
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Page 7
HD-03 Mask
Schenzhen Weifa Technology Co. LTD, STMK-N9W01
None, new
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.191 0.193 0.194 0.193 0.196
With sample 0.502 0.475 0.475 0.539 0.488
ΔP 0.311 0.282 0.281 0.346 0.292
Average 0.302
SD 0.027
S1 S2 S3 S4 S5
Blank 5.38E+04 4.77E+04 4.87E+04 4.92E+04 4.78E+04 4.86E+04
Blank 5.03E+04 4.80E+04 4.95E+04 4.75E+04 4.81E+04 4.72E+04
Run-1 1.37E+03 1.28E+03 6.91E+02 9.50E+02 2.14E+03
Run-2 1.36E+03 1.24E+03 7.12E+02 9.94E+02 2.20E+03
Run-3 1.40E+03 1.28E+03 6.75E+02 9.91E+02 2.14E+03
Run-4 1.35E+03 1.21E+03 6.80E+02 9.97E+02 2.20E+03
Filtration Efficiency 97.3% 97.4% 98.6% 98.0% 95.5%
Average 97.3%
SD 1.2%
Minimum 95.5%
CI95 95.9% 98.8%
Model and Brand Respirator/ materilas tested:
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Page 8
HD-04 Mask
Zhong Chen KN95 face Mask FFP2 model ZC9595
none, new
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.196 0.197 0.197 0.197 0.198
With sample 0.412 0.388 0.382 0.368 0.381
ΔP 0.216 0.191 0.185 0.171 0.183
Average 0.189
SD 0.017
S1 S2 S3 S4 S5
Blank 5.24E+04 5.10E+04 4.98E+04 4.83E+04 4.76E+04 4.90E+04
Blank 5.22E+04 5.01E+04 4.94E+04 4.91E+04 4.81E+04 4.85E+04
Run-1 1.60E+03 2.13E+03 1.85E+03 2.14E+03 1.57E+03
Run-2 1.55E+03 2.05E+03 1.93E+03 2.04E+03 1.53E+03
Run-3 1.55E+03 2.11E+03 1.93E+03 2.06E+03 1.61E+03
Run-4 1.57E+03 2.11E+03 1.91E+03 2.17E+03 1.56E+03
Filtration Efficiency 97.0% 95.8% 96.1% 95.6% 96.8%
Average 96.3%
SD 0.6%
Minimum 95.6%
CI95 95.5% 97.0%
Model and Brand Respirator/ materilas tested:
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Page 9
HD-05 Mask
Maozheng GB2626-2006 KN95 8600
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.165 0.165 0.165 0.165 0.165
With sample 0.404 0.387 0.399 0.398 0.423
ΔP 0.239 0.222 0.234 0.233 0.258
Average 0.237
SD 0.013
S1 S2 S3 S4 S5
Blank 1.01E+05 9.95E+04 9.81E+04 1.02E+05 1.03E+05 1.04E+05
Blank 1.01E+05 1.00E+05 9.78E+04 9.95E+04 1.06E+05 1.05E+05
Run-1 1.25E+03 1.32E+03 1.14E+03 1.29E+03 1.14E+03
Run-2 1.19E+03 1.31E+03 1.15E+03 1.30E+03 1.18E+03
Run-3 1.24E+03 1.32E+03 1.14E+03 1.32E+03 1.19E+03
Run-4 1.21E+03 1.29E+03 1.17E+03 1.34E+03 1.13E+03
Filtration Efficiency 98.8% 98.7% 98.8% 98.7% 98.9%
Average 98.8%
SD 0.1%
Minimum 98.7%
CI95 98.7% 98.9%
Model and Brand Respirator/ materilas tested:
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Page 10
HD-06 Mask
GB2626-2006, chinese writing certification card, heat stamped GB2626-2006
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.154 0.152 0.152 0.154 0.153
With sample 0.294 0.322 0.323 0.309 0.344
ΔP 0.14 0.17 0.171 0.155 0.191
Average 0.165
SD 0.019
S1 S2 S3 S4 S5
Blank 4.60E+04 9.84E+04 1.00E+05 9.87E+04 1.01E+05 9.87E+04
Blank 4.52E+04 1.00E+05 1.01E+05 9.55E+04 1.03E+05 9.82E+04
Run-1 3.69E+02 8.43E+02 7.37E+02 5.96E+02 2.23E+03
Run-2 4.00E+02 8.46E+02 7.17E+02 5.49E+02 2.29E+03
Run-3 3.94E+02 8.44E+02 6.81E+02 5.93E+02 2.34E+03
Run-4 3.54E+02 8.29E+02 5.56E+02 5.87E+02 2.29E+03
Filtration Efficiency 99.5% 99.2% 99.3% 99.4% 97.7%
Average 99.0%
SD 0.7%
Minimum 97.7%
CI95 98.1% 99.9%
Model and Brand Respirator/ materilas tested:
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Page 11
HD-07 Mask
Dongguan Modern Children's Products Co. Ltd Dongguan Modern Children's Products Co. Ltd
Pressure Drop,
''wg S1 S2 S3 S4 S5
Pressure
Drop,
''wg S1 S2 S3 S4 S5
Blank 0.193 0.196 0.196 0.197 0.198 Blank 0.487 0.488 0.482 0.000 0.000
With sample 0.345 0.342 0.333 0.359 0.349 With samp 0.542 0.535 0.539 0.000 0.000
ΔP 0.152 0.146 0.137 0.162 0.151 ΔP 0.055 0.047 0.057 0 0
Average 0.150 Average 0.032
SD 0.009 SD 0.029
S1 S2 S3 S4 S5 S1 S2 S3 S4 S5
Blank 4.80E+04 4.66E+04 4.63E+04 4.57E+04 4.61E+04 4.64E+04 Blank 9.90E+04 9.91E+04 1.02E+05 9.99E+04 9.87E+04 9.63E+04
Blank 4.74E+04 4.74E+04 4.69E+04 4.69E+04 4.63E+04 4.58E+04 Blank 9.95E+04 9.89E+04 1.01E+05 9.88E+04 9.78E+04 9.73E+04
Run-1 6.09E+03 7.85E+03 6.89E+03 5.72E+03 7.48E+03 Run-1 1.77E+04 1.74E+04 1.99E+04 1.79E+04 1.91E+04
Run-2 6.27E+03 7.61E+03 6.97E+03 5.69E+03 7.76E+03 Run-2 1.77E+04 1.68E+04 2.02E+04 1.83E+04 1.96E+04
Run-3 6.37E+03 7.98E+03 7.15E+03 5.92E+03 7.77E+03 Run-3 1.84E+04 1.70E+04 1.95E+04 1.83E+04 1.92E+04
Run-4 6.17E+03 7.54E+03 7.09E+03 5.55E+03 7.89E+03 Run-4 1.84E+04 1.76E+04 2.03E+04 1.84E+04 1.93E+04
Filtration Efficiency 86.9% 83.5% 84.9% 87.6% 83.3% Filtration E 81.8% 82.8% 80.1% 81.6% 80.2%
Average 85.2% Average 81.3%
SD 2.0% SD 1.2%
Minimum 83.3% Minimum 80.1%
CI95 82.8% 87.7% CI95 79.9% 82.7%
Overall Avg 83.3%Overall SD 2.6%
CI95 81.4% 85.1%
Model and Brand Respirator/ materilas tested:
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Model and Brand Respirator/ materilas tested
omment / treatment (add new blocks to this tab for other treatments
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Page 12
HD-08 Mask
Dongguan Modern Children's Products Co. Ltd
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.487 0.488 0.482 0.000 0.000
With sample 0.542 0.535 0.539 0.000 0.000
ΔP 0.055 0.047 0.057 0 0
Average 0.032
SD 0.029
S1 S2 S3 S4 S5
Blank 9.90E+04 9.91E+04 1.02E+05 9.99E+04 9.87E+04 9.63E+04
Blank 9.95E+04 9.89E+04 1.01E+05 9.88E+04 9.78E+04 9.73E+04
Run-1 1.77E+04 1.74E+04 1.99E+04 1.79E+04 1.91E+04
Run-2 1.77E+04 1.68E+04 2.02E+04 1.83E+04 1.96E+04
Run-3 1.84E+04 1.70E+04 1.95E+04 1.83E+04 1.92E+04
Run-4 1.84E+04 1.76E+04 2.03E+04 1.84E+04 1.93E+04
Filtration Efficiency 81.8% 82.8% 80.1% 81.6% 80.2%
Average 81.3%
SD 1.2%
Minimum 80.1%
CI95 0.798716 0.827312
Model and Brand Respirator/ materilas tested:
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Page 13
HD-09 Mask
Jusenyuan FFP2 creamy-white, wrtiting slightly smaller, material is less fuzzy, heat bonding is more bold
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.209 0.211 0.212 0.213 0.215
With sample 0.428 0.440 0.444 0.447 0.426
ΔP 0.219 0.229 0.232 0.234 0.211
Average 0.225
SD 0.010
S1 S2 S3 S4 S5
Blank 1.03E+05 9.77E+04 1.03E+05 1.04E+05 1.02E+05 1.03E+05
Blank 1.02E+05 1.00E+05 1.02E+05 1.04E+05 1.03E+05 1.02E+05
Run-1 1.18E+04 1.08E+04 1.12E+04 1.05E+04 1.02E+04
Run-2 1.15E+04 1.11E+04 1.11E+04 1.07E+04 1.01E+04
Run-3 1.17E+04 1.09E+04 1.15E+04 1.06E+04 1.02E+04
Run-4 1.16E+04 1.13E+04 1.15E+04 1.06E+04 1.01E+04
Filtration Efficiency 88.4% 89.0% 89.0% 89.7% 90.1%
Average 89.3%
SD 0.7%
Minimum 88.4%
CI95 0.88454 0.900819
Model and Brand Respirator/ materilas tested:
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Page 14
HD-10 Mask
Jusenyuan FFP2 N95, bluish-white material, slightly fuzzy, less sturdy, writing slightly larger or more spaced out.
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.487 0.488 0.482 0.000 0.000
With sample 0.542 0.535 0.539 0.000 0.000
ΔP 0.055 0.047 0.057 0 0
Average 0.032
SD 0.029
S1 S2 S3 S4 S5
Blank 1.02E+05 1.02E+05 1.03E+05 1.01E+05 1.01E+05 6.07E+04
Blank 1.05E+05 1.03E+05 1.01E+05 1.02E+05 1.00E+05 6.18E+04
Run-1 3.77E+03 5.25E+03 3.95E+03 3.88E+03 5.79E+03
Run-2 3.53E+03 5.32E+03 4.03E+03 3.87E+03 5.97E+03
Run-3 3.55E+03 5.37E+03 3.95E+03 3.86E+03 6.01E+03
Run-4 3.68E+03 5.44E+03 4.12E+03 3.97E+03 6.14E+03
Filtration Efficiency 96.5% 94.8% 96.1% 96.1% 92.6%
Average 95.2%
SD 1.6%
Minimum 92.6%
CI95 0.932315 0.971905
Model and Brand Respirator/ materilas tested:
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Page 15
HD-11 Mask
Fleephck, Lot:20200401, KN95 Protective Mask, FFP2
None, new
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.248 0.250 0.247 0.249 0.248
With sample 0.668 0.602 0.692 0.689 0.585
ΔP 0.42 0.352 0.445 0.44 0.337
Average 0.399
SD 0.051
S1 S2 S3 S4 S5
Blank 1.22E+05 1.19E+05 1.19E+05 1.15E+05 1.04E+05 1.13E+05
Blank 1.17E+05 1.21E+05 1.21E+05 1.16E+05 1.15E+05 1.16E+05
Run-1 1.69E+03 2.15E+03 6.91E+02
Run-2 1.72E+03 1.26E+03 1.71E+03 2.16E+03 7.08E+02
Run-3 1.61E+03 1.25E+03 1.71E+03 2.11E+03 6.94E+02
Run-4 1.66E+03 1.24E+03 1.63E+03 2.28E+03 7.09E+02
Filtration Efficiency 98.6% 99.0% 98.6% 98.1% 99.4%
Average 98.7%
SD 0.5%
Minimum 98.1%
CI95 98.1% 99.3%
Model and Brand Respirator/ materilas tested:
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Page 16
HD-12 Mask
KN95 Protective Mask TL-KN95-01, Shenzhen Tianlong Century Technology Development
None, new
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.248 0.247 0.248 0.249 0.247
With sample 0.618 0.700 0.644 0.623 0.646
ΔP 0.37 0.453 0.396 0.374 0.399
Average 0.398
SD 0.033
S1 S2 S3 S4 S5
Blank 1.38E+05 1.31E+05 1.20E+05 1.08E+05 1.03E+05 1.02E+05
Blank 1.37E+05 1.28E+05 1.17E+05 1.08E+05 1.01E+05 9.85E+04
Run-1 2.40E+03 2.84E+03 2.16E+03 2.49E+03 2.03E+03
Run-2 2.43E+03 2.76E+03 2.16E+03 2.53E+03 1.91E+03
Run-3 2.39E+03 2.71E+03 2.27E+03 2.48E+03 1.95E+03
Run-4 2.30E+03 2.61E+03 2.17E+03 2.56E+03 1.97E+03
Filtration Efficiency 98.2% 97.8% 98.1% 97.6% 98.1%
Average 97.9%
SD 0.2%
Minimum 97.6%
CI95 97.6% 98.3%
Model and Brand Respirator/ materilas tested:
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Page 17
HD-13 Mask
HY001 KN95, Dongguan Hao Yang, carbon fiberbeating products Co. Ltd
none, new
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.252 0.251 0.252 0.252 0.250
With sample 0.432 0.385 0.431 0.435 0.423
ΔP 0.18 0.134 0.179 0.183 0.173
Average 0.170
SD 0.020
S1 S2 S3 S4 S5
Blank 1.07E+05 1.02E+05 1.02E+05 1.01E+05 1.01E+05 1.00E+05
Blank 1.08E+05 1.02E+05 1.01E+05 1.02E+05 1.01E+05 1.02E+05
Run-1 2.79E+04 3.55E+04 2.73E+04 2.98E+04 2.49E+04
Run-2 2.91E+04 3.55E+04 2.76E+04 3.01E+04 2.54E+04
Run-3 2.94E+04 3.60E+04 2.74E+04 2.96E+04 2.46E+04
Run-4 3.00E+04 3.53E+04 2.70E+04 2.91E+04 2.50E+04
Filtration Efficiency 72.2% 65.0% 73.1% 70.7% 75.3%
Average 71.3%
SD 3.9%
Minimum 65.0%
CI95 66.5% 76.1%
Model and Brand Respirator/ materilas tested:
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Page 18
HD-14 Mask
N95
Add new blocks to this tab for other treatments
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.237 0.236 0.238 0.238 0.239
With sample 0.499 0.531 0.495 0.463 0.506
ΔP 0.262 0.295 0.257 0.225 0.267
Average 0.261
SD 0.025
S1 S2 S3 S4 S5
Blank 1.02E+05 1.02E+05 9.88E+04 9.99E+04 9.92E+04 1.00E+05
Blank 1.00E+05 9.90E+04 9.95E+04 9.97E+04 9.94E+04 9.87E+05
Run-1 1.29E+03 4.39E+03 2.11E+03 2.40E+03 1.93E+03
Run-2 1.30E+03 4.50E+03 2.06E+03 2.37E+03 1.89E+03
Run-3 1.28E+03 4.31E+03 2.07E+03 2.40E+03 1.93E+03
Run-4 1.88E+03 4.46E+03 2.11E+03 2.44E+03 1.96E+03
Filtration Efficiency 98.6% 95.6% 97.9% 97.6% 99.4%
Average 97.8%
SD 1.4%
Minimum 95.6%
CI95 96.0% 99.6%
Model and Brand Respirator/ materilas tested:
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Page 19
HD-15 Mask
N95
Add new blocks to this tab for other treatments
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.271 0.270 0.271 0.272 0.272
With sample 0.615 0.590 0.608 0.704 0.714
ΔP 0.344 0.32 0.337 0.432 0.442
Average 0.375
SD 0.057
S1 S2 S3 S4 S5
Blank 9.68E+04 9.50E+04 9.60E+04 9.51E+04 9.35E+04 9.30E+04
Blank 9.55E+04 9.76E+04 9.58E+04 9.50E+04 9.40E+04 9.15E+04
Run-1 1.18E+03 1.29E+03 1.10E+03 7.19E+02 7.53E+02
Run-2 1.10E+03 1.29E+03 1.06E+03 7.34E+02 7.72E+02
Run-3 1.05E+03 1.28E+03 1.05E+03 7.28E+02 7.33E+02
Run-4 1.05E+03 1.30E+03 1.03E+03 7.46E+02 7.44E+02
Filtration Efficiency 98.9% 98.7% 98.9% 99.2% 99.2%
Average 99.0%
SD 0.2%
Minimum 98.7%
CI95 98.7% 99.3%
Model and Brand Respirator/ materilas tested:
comment on treatments
Coronavirus.health.ok.gov Facebook.com/OklahomaHealth Twitter.com/HealthyOklahoma
As of 5/5/20 2:18:25 PM
Page 20
HD-16 Mask
Makrite N95, NIOSH certified, 9500-N95, Particulate respirator
New, untreated
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.249 0.250 0.250 0.250 0.250
With sample 0.476 0.560 0.499 0.517 0.505
ΔP 0.227 0.31 0.249 0.267 0.255
Average 0.262
SD 0.031
S1 S2 S3 S4 S5
Blank 1.17E+05 1.14E+05 1.13E+05 1.06E+05 1.01E+05 9.76E+04
Blank 1.18E+05 1.13E+05 1.11E+05 1.06E+05 1.02E+05 9.69E+04
Run-1 8.96E+02 7.18E+02 1.95E+03 6.28E+02 8.42E+02
Run-2 9.15E+02 6.87E+02 1.91E+03 6.25E+02 8.15E+02
Run-3 9.07E+02 6.64E+02 1.91E+03 6.36E+02 8.18E+02
Run-4 9.05E+02 6.89E+02 1.82E+03 6.34E+02 8.08E+02
Filtration Efficiency 99.2% 99.4% 98.3% 99.4% 99.2%
Average 99.1%
SD 0.5%
Minimum 98.3%
CI95 98.5% 99.7%
Model and Brand Respirator/ materilas tested:
comment on treatments
Coronavirus.health.ok.gov Facebook.com/OklahomaHealth Twitter.com/HealthyOklahoma
As of 5/5/20 2:18:25 PM
Page 21
HD-17 Mask
Lamdown KN95, "KN95 Protection Level"
New, untreated
Pressure Drop,
''wg S1 S2 S3 S4 S5
Blank 0.193 0.194 0.196 0.196 0.197
With sample 0.434 0.518 0.463 0.496 0.441
ΔP 0.241 0.324 0.267 0.3 0.244
Average 0.275
SD 0.036
S1 S2 S3 S4 S5
Blank 9.48E+04 1.10E+05 1.20E+05 1.20E+05 1.19E+05 1.18E+05
Blank 9.53E+04 1.04E+05 1.19E+05 1.21E+05 1.19E+05 1.20E+05
Run-1 1.65E+03 2.26E+03 2.25E+03 1.81E+03 2.91E+03
Run-2 1.64E+03 2.20E+03 2.21E+03 1.73E+03 2.82E+03
Run-3 1.61E+03 2.25E+03 2.20E+03 1.76E+03 2.83E+03
Run-4 1.60E+03 2.18E+03 2.17E+03 1.76E+03 2.91E+03
Filtration Efficiency 98.4% 98.0% 98.2% 98.5% 97.6%
Average 98.1%
SD 0.4%
Minimum 97.6%
CI95 97.7% 98.6%
Model and Brand Respirator/ materilas tested:
comment on treatments