At present, the ultraviolet lamp power used for disinfection is 40 W, 30 W, 20 W, 15 W and so on. It has been reported that it takes 43 minutes for 30 W critical lamp tube to completely kill Staphylococcus aureus in 1.2x107cfu/ dish, and for 20 W critical value lamp tube to kill Staphylococcus aureus in 1.2 × 107efu/ dish completely. Therefore, the low power uv light lamp can reach the same sterilization level by prolonging the corresponding irradiation time.
