Ikut kasih info dikit, cahaya UV yg beneran itu sesuai teori harus 
keunguan dengan wavelength mulai 400nm kebawah, makin kecil wavenya 
makin ganas tuh UV nya. Kalo warna cahayanya  putih agak mencurigakan 
dan biasanya lampu UV itu mahal ga dapet 26 ribu.
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