蛍光 けいこう染料 せんりょうじゃなかったです
keikōsenryōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 蛍光染料

1. Wasn't fluorescent dye.; Wasn't a fluorescent dye.

Past/Perfective
Negative
Polite
Casual Register