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Thermax ltd supplies purafil inc usa`s, air filtration chemicals and equipment to remove gaseous contaminants by chemisorption, which removes contaminant gases by means of adsorption, absorption and chemical reaction. Gases shall be trapped within the chemical media pellet where oxidation changes the gases into non-toxic, harmless solids, eliminating the possibility of desorption. Use the onguard 3000 to obtain real-time, continuous information about the level of corrosion in your environment. It can communicate with your dcs. System via a 4-20 ma output signal or it can have data logger through which the data can be downloaded to pc via software. It is accurate within: to.5-1 % of full span and corresponds to isa s 71. 04-1985. Sp blend, a typical purath media for removal of toxic, odorous and corrosive gases: this is an equal mix of the sp and purakol media, the latter being an engineered activated carbon media. Sphas sodium permanganate content of 12%. Effective against a broad spectrum of contaminant gases, eg, sox, nox, hzs, formaldehyde, hydrocarbons, organic acids and vocs. It is ul classified class 1. Simple media replacement and can be used in place of a two-pass media system.