Test Metal

Notes:

• When tested directly on metal, the green glow may be hard to see. So it is often better to rub the metal with a melamine sponge (also known as a magic eraser) and then test on the sponge instead of testing directly on the metal. The use of melamine sponge helps to have clearer results.
• Always keep the reagent spray and dripper in an upright position when not in use to avoid leakage.