By thermally bonding all polypropylene materials to create a filtration matrix, Behringer melt-blown filter cartridges are an economical solution for high quality filtration, while using all polypropylene materials that meet FDA regulation 21CRF177.1520. Furthermore, all Behringer melt blown cartridges are tested and certified under ANSI / NSF standard 42 for material requirements only. No binders, lubricants, or surfactants are used in the manufacturing process. They are manufactured with 3 different efficiency ranges. A description on these filters by series can be found as follows: