A water pump or purifying and neutralizing tablets work well. These ceremonies reflect the ancient belief in the healing and purifying properties of water. Specially prepared oils are used in some religious ceremonies and rituals as purifying agents. Inbreeding can result in purging of deleterious alleles from a population through purifying selection. There are several methods for purifying and isolating honokiol. In chemistry, recrystallization is a procedure for purifying compounds. The last step is purifying and separating morphine from other opium alkaloids. The plant has air purifying qualities for the indoor environment. An industrial scale use for pure carbon monoxide is purifying nickel in the Mond process. Hindus consider the waters of the Ganges to be both pure and purifying. Many of the effects are purifying and uplifting in nature. The cost of purifying it for human consumption makes that process less feasible. Algae cultivation is under study for uranium/plutonium sequestration and purifying fertilizer runoff. The Red Cross also quickly responded, supplying water purifying tablets and other relief items. It introduced developing railroads and purifying water as new mechanics.