![]() ![]() ![]() This results means that the majority of harmful ultra fine particles can also be prevented with the use of the nasal screens. This result is significantly above most the filtering abilities of most commercial dust masks.įor the very elusive Ultra Fine particles that are less than 0.1 microns,which include even viruses, the filtration showed effectiveness close to 80%. For the particles less than 2 microns, commonly refereed to as Fine Particles the filtration effect was up to 92.9% effective. The study has concluded that for coarse particles the capability of the filtration was up to 99%. The methods utilized for the effectiveness of the filtration is with the usage of an Ultrasonic Particle Sieve.For the Qualitative Analysis the Scanning Electron Microscopy (SEM) is used.The Lab used two major methods for the analysis of the Nasal Screens filtration abilities: Limit of Quantitation (LOQ): The minimum concentration of an measure is measured within specified limits of precision and accuracy during routine laboratory operating conditions.Particle analysis is limited to a single occurrence of an measure particle in the sub-sample analyzed. Limit of Detection (LOD): The minimum concentration is theoretically achieved for a given analytical procedure in the absence of matrix or sample processing effects.Trace levels of the measure may be present in the sample below the limit of detection (LOD). None Detected (ND) denotes the absence of a measure in the sample analyzed.The results of the research can be seen here at the original document: Laboratory Reseach – Marian Fabric Porosity Descriptions & Definitionsīefore testing the nasal screens an understanding of the terms is necessary. EMSL Analytical conducted this study, to measure the effectiveness of FDNS Nasal Screens in preventing Particulate Matter penetrating through the protective barriers. To see a comprehensive list of the dangerous airborne pollutants you can check this indoor air pollutant list. ![]()
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