When used with TO HVL filter stand, the HVL filter sets allow the medical physicist or radiographer to test the half value layer (HVL) of their x-ray system. Three different sets are available: General Radiography: 99.5% Al, 100x100mm (2x 2.0mm, 3x 1.0mm, 3x 0.5mm and 2x 0.25mm) Standard Mammography: 99.5% Al, 100x100mm (1x 0.2mm and 5x 0.1mm) High Purity Mammography: 99.9% Al, 100x100mm (6x 0.1mm) HVL filter sets are supplied in a protective carry case.
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