Sterility Test Unit is made up of stainless steel which provides its necessary strength to hold up high pressure applied during sample purification. The unit comes in various sizes and branches connected to each other. The 3 branch unit comes with 47mm size. It provides a flow rate of 45 LPM and vacuum of 27 Hg (680mm). The unit can hold a maximum pressure of 55 PSig, 1/4 HP this gives efficient purification of the sample in one go.