OWF-GF2 Filter Pack is a 4 stage filtration system with 26 performance claims and removes all microbiological threats (bacteria, viruses, parasites and protozoan oocysts) and a myriad of pesticides, herbicides, pharmaceuticals, industrial chemicals, asbestos, chlorine, rust, sediments and heavy metals (lead, mercury, cadmium and antimony) and in addition removes all microplastics. All Kits are distributed by our Partner NGOs to the less fortunate across the globe.