Editing Perlite (section)

=== Aquatic filtration ===
Perlite is an excellent [[Filtration#Filter aid|filtration aid]] and is used extensively as an alternative to [[diatomaceous earth]]. The popularity of perlite usage as a filter medium is growing considerably worldwide.{{citation needed|date=February 2024}} Several products exist in the market to provide perlite based filtration. Several perlite filters and perlite media have met NSF-50 approval (Aquify PMF Series and AquaPerl), which standardizes water quality and technology safety and performance. Perlite can be safely disposed of through existing sewage systems, although some pool operators choose to separate the perlite using settling tanks or screening systems to be disposed of separately.{{citation needed|date=September 2021}}