Disinfectant apparatus; apparatus for disinfecting water; apparatus for disinfecting air; apparatus for disinfecting respirators, face masks, face shields, visors, gloves and other personal protection equipment, clothing, equipment; apparatus for disinfecting tools, furniture and solid surfaces; disinfectant apparatus for medical purposes; germicidal ultraviolet radiation apparatus for purifying air; air purifying units for household use; air purifying units for commercial use; air purifying units for industrial use; handheld apparatus for disinfecting air, water, respirators, face masks, face shields, visors, gloves and other personal protection equipment; handheld apparatus for disinfecting clothing, equipment, tools, furniture and solid surfaces; ultraviolet (uv) radiation water treatment devices; water purification machines for domestic use; water purification machines for marine use; ultraviolet (uv) radiation devices for use in water dispensing apparatus; ultraviolet (uv) radiation devices for use in water supply apparatus; ultraviolet (uv) radiation devices for use in air conditioning units; ultraviolet (uv) radiation devices for use in building air supply units; apparatus for water treatment; apparatus for air treatment.;