Explain the Hydrophobic Grid Membrane Filter (HGMF)?
It is also used to enumerate microorganisms from a variety of food samples. By using this method, organisms as few as 10 cells/gm can be detected and results can be obtained within 24 hours. The filter contains 1600 wax grid. Following filtration, membrane is placed on suitable media for colony development overnight. The grids that contain colonies are enumerated and the MPN is calculated.