Looking for Nickel wire NP2 99.86% 0.025 mm

We are looking for Nickel wire NP2 99,86% purity 0.025 mm in diameter. If you can supply kindly advise:

1. the Isotopic composition specifications

 2. the total impurities: (Mg, Na, Cu, B, C, N, O, etc)

3. the payment terms