Nickel Alert
Nickel Alert (dmg spot test) tests for nickel in any metal item such as jewelry, watches, and belt buckles. Nickel Alert is sensitive enough to detect the presence of free nickel at a level as low as 10 ppm (parts/million)—a threshold below which only individuals with the most pronounced sensitivity to nickel would experience a reaction.
Within 30 seconds you will know if the item has even minute amounts of nickel. One bottle of Nickel Alert is sufficient for 100 - 150 positive tests.