The Whatman Carbon Cap 150 capsule filter is filled with high-purity, high-efficiency, acid-washed, granular-activated carbon with a pleated HEPA filter. Suitable for absorption of organics from air and removal of color, organics and chlorine from water. Meets requirements for continuous column percolation purification processes. Carbon acts as an absorption media . Pleated glass microfiber filter structure. Retains 99.97% of particles greater than 0.3µm. Large surface area of activated carbon for effective operation. Two sizes of capsules available to suit specific application. Applications include: water, chemical, and reagent purification, removes noxious odors oil mists and contaminants, compressed air lines, vacuum pumps, and instrument outlet exhausts. Eliminates a potential health hazard from the workplace. Per each. Whatman #: 6704-1500.