the.com/purifier

a tiny machine fighting the war you can't see in your own lungs

means A device or substance that removes contaminants, impurities, or pollutants from something — most often air or water — to make it cleaner.

from From "purify" plus the agent suffix "-er" (the thing that does the deed). "Purify" came through Old French "purifier" from Latin "purificare," a welding of "purus" (clean, pure, unmixed) and "facere" (to make) — literally "to make pure." The "pur-" root runs deep through English in "pure," "purge," and "Puritan," all carrying that same idea of stripping away what doesn't belong.

silent enemy
indoor air is often dirtier than outside
HEPA origin
invented to filter radioactive particles in WWII
size limit
catches particles 300 times thinner than hair
ozone trap
some 'purifiers' actually pollute by emitting ozone
plant rivals
NASA studied houseplants as natural air cleaners
for instance

brita water filter pitcher — household water filtration brand founded in 1966, reduces chlorine and other contaminants

dyson pure hot cool — air purifier with hepa filter released in 2015, removes 99.95% of particles in rooms

coway ap-1512hh — best-selling korean air purifier with hepa-13 filter, covers 361 sq ft spaces

the.com · every word