medicine state: powder packing: kg/bag kg/drum (double plastic-bag inside, or suppliers with verified business licenses xi'an contri biological technology co., ltd. shaanxi, china iso , haccp contact now inquiry basket recommended product from this supplier. high efficiency plant extract rich in organic matter...
the filter is normally expressed as a reflection as the number of micro organisms that pass through the filter media when it is challenged. this filter is then described as being x% efficient. the x% is an expression of the number of organisms penetrating the filter when challenged by an aerosol containing...