What is the difference between the Kold Ster-il® System
and other multiple canister systems?

First, quality through materials of construction. Each plastic type is FDA Approved, in addition all all fittings are threaded schedule PVC (NSF Approved). The first & second canister's end caps are injection molded virgin polypropylene (without any fillers). The cast acrylic tube (disc retainer), polypropylene bag retainer and end caps are prewashed in 1.0 megaOhm/cm (1.0µ/S/cm) water.
Second, the unique system of media is U.S. Patented, providing a first stage sorbing of heavy metals, VOC's, Tannins, Organic Carbons and total Phosphates. The second state 0.50µm filter barrier restricts: Giardia, Cryptosporidium Oocysts, fungus, algae, diatoms, metal particulates most bacteria, endotoxins, biopolymers, pyrogens. The third stage 0.50µm activated carbon block outerwrapped with special plastic fibers (longevity) and the inside channel is filled with a NSF Approved charged ceramic for heavy metals.
Third, the flow rates are 602% faster than the 0.60 gpm (2.2Lpm) flow other systems are restricted in order to perform under ANSI/NSF Standards for 10" cartridge filter systems.
Fourth, performance claims have been validated in a Medical School's Pharmacology/Toxicology Dept. under EPA Standards & Methods of Analysis or the higher Medical CAP Standards/Requirements. Japan also certified the 14.0 Kold Ster-il® flow rate.