,
Hoʻopili ʻia kekahi mau mea pena (pololei, acid, acidic medium, reactive, etc.) me nā ion metala (copper, cobalt, chromium, nickel ions) e hana i kahi papa o nā wai. ʻO ka lā a i ʻole ka holoi ʻana. No ka laʻana, emerald blue GL (Lionolblue GS) a me GGN (Acid Complex Blue GGN) a me nā mea ʻē aʻe.
1:2 He nui nā ʻano o nā mea hoʻonaninani metala, hiki ke hoʻokaʻawale ʻia i lalo ma lalo o kēia:
a) Nā hoʻohana ʻana i ka uhi (inks, pena).No ka laʻana, kala lāʻau, paʻi ʻīnika, kala ʻili metala, etc.
b) Ke noi i loko o nā plastics, i hoʻohana nui ʻia e like me ke kala (fluorescent) kala no nā plastics
c) nā noi kūikawā, e like me ka pepa wax a i ʻole nā huahana kukui kala, kala poli kāmaʻa, kala ʻili ʻili, nā mea hoʻonaninani a me nā kala ʻē aʻe.
1: 2 Metala paʻakikī dyes i hiki ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe organik e like me nā mea ʻala, esters, styrene, methyl methopropionate, etc.
ʻO nā aka nui o ka 1:2 metala paʻakikī: melemele, ʻalani, ʻulaʻula, uliuli, ʻeleʻele, a me ka ʻulaʻula fluorescent (peach). Aia pū kekahi metala paʻakikī i kapa ʻia ʻo 'China Red' ma ka mākeke me nā waihoʻoluʻu ʻālohilohi.Ua ʻike ʻia ʻo ia ma ka inoa National Flag Red.