Features include an optional ion air purifier type filtration system. Clean air supplies oxygen which is an excellent purifier for plants and the aeroponic environment. In January 2016, Dyson released the Dyson Pure Cool air purifier. Frequency of filter replacement and electrical consumption are the major operation costs for any purifier. This includes the dusting tower, cooling pipes, scrubbers, drying tower, arsenic purifier and testing box. Furthermore, reports point out that these plants can be used efficaciously as an air purifier. Architecturally the logic is allow tree to act as a natural air purifier. A long-term solution is to buy an expensive air purifier for houses or cars. This product has been marketed in India as Tata swach, a low cost water purifier. It allegedly acts as a tonic, diuretic and blood purifier. Water spinach has great potential as a purifier of aquatic habitats. In 2008, Philips India entered the water purifier market. Water is considered a purifier in most religions. Sellers sometimes describe MMS as a water purifier to circumvent medical regulations. Sellers sometimes describe MMS as a water purifier so as to circumvent medical regulations.