Nickel test paper (Box of 200 strips, 20 x 70mm)

• For non-destructive testing of materials, apply a drop of 3% Nitric acid (1 part Nitric acid 85%, 5 parts water) to the degreased surface. After 1 minute, absorb the liquid with the test paper. With this procedure, Nickel contents > 0.5% are safely detected

• Color reaction: white to red

• Limit of sensitivity: 10 mg/l Ni2+