BACKGROUND A variety of different sampling devices are currently available to acquire air samples for the study of the microbiome of the air. All have a degree of technical complexity that limits deployment. Here, we evaluate the use of a novel device, which has no technical complexity and is easily deployable. RESULTS An air-cleaning device powered by electrokinetic propulsion has been adapt...

pan Association for Working Environment Measurement. The vapor pressures of these substances have been determined to be 2.5 •~ 10 mmHg for o-phthalodinitrile at 26•Ž, and 5 •~ 10-3 mmHg for acrylamide at 25•Ž, using the vapor saturation method.3) Due to sublimation on the filter, however, filter sampling of these substances may yield a lower value than their actual environmental concentration. ...

Certain important industrial fermentations require substantial amounts of sterile air that are commonly obtained by filtration through beds of fibers, granular solids, or specially prepared filter media (Gaden and Humphrey, 1956). To control the efficiency of such sterilization filters, several methods to estimate the microorganism content of the air have been proposed. These methods can be cla...

PURPOSE The effects of air cleaners on the removal of airborne indoor allergens, especially house dust mites (HDM), are still controversial. The objective of this study is to evaluate the effect of an air cleaner with an electrostatic filter on the removal of airborne mite allergens. MATERIALS AND METHODS A dried HDM culture medium that contained mite body particles and excretions was dispers...

Abstract With the rapid development of society, severe haze weather caused by particulate matters (PMs) occurs frequently. Electret air filters have been playing an important role in purifying and alleviating pollution. In this work, electret were fabricated based on polypropylene (PP) materials to investigate their filtering performance PMs. First, PP-based films was mainly focused on. The cha...

UNLABELLED Used ventilation filters are a major source of sensory pollutants in air handling systems. The objective of the present study was to evaluate the net effect that different combinations of filters had on perceived air quality after 5 months of continuous filtration of outdoor suburban air. A panel of 32 subjects assessed different sets of used filters and identical sets consisting of ...