\pˈɜːkɔːl fˈɪltə], \pˈɜːkɔːl fˈɪltə], \p_ˈɜː_k_ɔː_l f_ˈɪ_l_t_ə]\

Definitions of PURKALL FILTER

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1916 - Appleton's medical dictionary
By Smith Ely Jelliffe

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Ultraviolet Ray

  • That portion electromagnetic spectrum immediately below visible range extending into x-ray frequencies. longer near-biotic vital necessary for endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic extravital rays) viricidal, bactericidal, mutagenic, carcinogenic used as disinfectants.
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