Neutral Red, pure, high purity biological stain..
New Methylene Blue N, zinc chloride double salt, pure..
Nickel standard solution, for AAS, 1 mg/ml Ni in 2-5% HNO3..
Nickel(II) acetate tetrahydrate, 99%, extra pure..
Nickel(II) acetate tetrahydrate, 99+%, for analysis..
Nickel(II) bromide hydrate, 98%, for analysis..