... certification *PP+UDF+CTO+RO+T33 *Can remove bacteria, virus, chlorine, odor, heavy metal. Luxury business RO ... Five grades filtration generally makes all filters work effectively. Remove sediment, suspension, colloid substances, organic impurities, residual chlorine ... ,smell,turbidity ectstage3block carbon filbercto-5"-10"remove the chlorine,odor,smell and suspending particlesstage4RO ...