Additional Details ------------------------------ Product description: Aries FilterWorks cartridge uses ResinTech SIR-110-HP, a strong base anion resin. It exhibits an unusually high preference for perchlorate and a low affinity for multivalent ions. This media is supplied in chloride form as a moist, durable, uniform spherical bead. ResinTech SIR-110-HP essentially eliminates all monovalent �dumping'' making it useful in nitrate removal applications. The perchlorate operating capacity is virtually unaffected by the presence of sulfates.About PerchloratesPerchlorate salts, such as ammonium perchlorate and potassium perchlorate, are man-made compounds used as combustion accelerants, primarily in solid-fueled rockets and missiles. It can also be found in some munitions, fireworks, and road flares and is even thought to exist naturally in some nitrate-based fertilizer products. Manufacturing waste and improper disposal of perchlorate containing compounds are increasingly being found in groundwater and local drinking water wells. Perchlorate is one of a newly recognized group of toxins called endocrine disrupters, which can alter hormonal levels, by interfering with iodide uptake in the thyroid gland . The US Environmental Protection Agency, federal agencies and local governments are currently assessing the potential human health risks posed by perchlorate exposure.