Pentair EF-1500 Series Style:Refill twist the cartridge (lefty loosey)

twist the cartridge (lefty loosey) and pull it out

but this baby packs a punch

I’d start to get a little skittish about safety

And there we go

Pentair EF-1500 Series Style:Refill twist the cartridge (lefty loosey)The baby of the Everpure EF series, this wee tiny itty bitty teensy weensy thing filters 1500 gallons before it starts bawling for a change. That said, it also filters down to 0. 5 microns, which is half the size of your typical bacteria. Which is why the NSF certified it under standard 53 to reduce cysts such as Cryptosporidium and Giardia by mechanical means. Oh, and also standard 42 for taste smell other aesthetic impurities. Oh, and its also a