BORAX BEAD TEST

BORAX BEAD TEST

           It is used to detect colored radicals like Cu²⁺, Fe²⁺, Mn²⁺, Co²⁺, Cr³⁺ and Ni²⁺

Procedure

 Make a loop of clean Pt wire. Heat it in a flame to remove impurities. Take a little borax on hot loop and heat again. Borax will first swell up and then melts to give a colourless, glassy bead. Put some compound on the bead and heat again first in oxidising flame and then in reducing flame.