18mm 10ml na-agịga ndị isi ihu na-acha uhie uhie bụ otu iko e mere maka ụlọ nyocha. A na-eji iko USP1 mee ha nke ọma ma na-eguzogide oke okpomọkụ na corrosion. Vals ndị a dabara adaba maka nyocha nke na-agbanwe agbanwe nke na-agbanwe agbanwe na gas, nwere ike ịkwakọba ihe nlere na-agbanwe agbanwe iji gbochie nzacha.