Northstar´s Borocolour Rod Midnight NS-57

Northstar´s Borocolour Rod Midnight NS-57
Price/g
Rod~40g
Order quantity: > 200 g
A dark opaque blue. Work in an oxidizing flame to prevent graying. Heat gently and slowly to prevent boiling. It is heat and flame sensitive. It must be warmed up slowly and once glowing heat gently. Because the color is so intense it must worked in an oxidizing flame. If the flame is not oxidizing enough, the color will develop grayish brown streaks.