DAIHAN-brand® Electric Classic Water Stills, “WWS”, Built-in Prefilter & Auto. On/Off system|for Laboratory Water, pyrogen-free/0.3megohm·cm(resistivity)/pH5.4 to 7.3, Capa. 4-/8-/12-Lit./hr.|(1) with Stainless-steel 100 mesh Prefilter, (2) with PP 1㎛ pore Prefilter(Cartridge), 필터부착형 증류수 제조기