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O nisi vali (tu'usa'o, acid, acidic medium, reactive, etc.) e fa'alavelaveina i ion u'amea (apamemea, cobalt, chromium, nickel ions) e fausia ai se vasega o vali. E solu i le vai ma o ana mea vali e sili atu ona tetee susulu o le la po'o le fufuluina.Mo se fa'ata'ita'iga, le susulu o le la sa'o le emerald blue GL (Lionolblue GS) ma le acid complex blue GGN(Acid Complex Blue GGN), ma isi.
1:2 u'amea lavelave vali e iai le tele o fa'aoga, lea e mafai ona vaevaeina i lalo i lalo:
a) Fa'aoga ile fa'alavalava (inks, vali).Mo se faʻataʻitaʻiga, valivali laupapa, vaitusi lomitusi, faʻailoga uamea, ma isi.
b)Talosaga i palasitika, e masani ona faʻaaogaina e pei o lanu manino (fluorescent) mo palasitika
i) fa'aoga fa'apitoa, e pei o le fa'asolo pepa po'o le moliga'o mea e valivali, fa'ailoga fa'ailoga seevae, pa'u pa'u pa'u pa'u lanu, mea teuteu ma isi lanu.
1:2 u'amea felanulanua'i lavelave o vali ia e soluble i solvents organic e pei o aromatics, esters, styrene, methyl methopropionate, etc.The organic solvents taʻua i luga e toetoe lava a le mafai ona solu i le vai.
O paolo autu o le 1: 2 Umea lavelave vali o: samasama, moli, mumu, lanumoana, uliuli, ma fluorescent mumu (peach). E iai foʻi se vali faʻapitoa ua taʻua o le 'Saina Red' i luga o le maketi ma lanu susulu.E lauiloa foi i le igoa National Flag Red.