Nickel test paper • Quick and easy determination of nickel • This test paper allows the quick and easy detection of nickel. • 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. Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: white → red • Limit of sensitivity: 10 mg/l Ni2+