The MicroSentry™ SCB Series carbon block filter cartridges are ideal for use as a water filter in water purification systems, pre & post RO systems and food & beverage applications. Activated carbon block filter for reducing chlorine and organic chemicals. Sintered carbon filter performs dual function role as activated carbon filter and 5 micron sediment filter. Acid washed carbon provides high absorptive capacity for reducing chlorine taste and odors and organic chemicals. Minimal Release of Carbon Fines.