A commissioning view on why reversing the valve is not enough — and how to set the wash that protects the bed A manganese sand filter is both a reaction surface and a solids collector. During servi… Read More

Color dopper ultrasound gives a significant evaluation of vessels movement . This non-invasive method employs high-frequency sonic waves to display the speed and course of blood flow . Color indicates movement : scarlet generally signifies flow in the direction of the transducer , while azure sug… Read More