... inside outside Use for wine,food ,juice, beverage Technical parameterssand bar filter(sand filter,filter)Made of stainless steel 304 or ... outsideUse for wine,food ,juice, beverageSand Bar Filter-the best choice for filtration. Sand filter bar (also named sand core)series is ... main part of filtration, the filter through the sand filter bar to improve filtrate and water clarity. The filter is widely ...