... % 3.Helium-He,Neon-Ne,Krypton-Kr,Xenon-Xe 4.best quality Neon (Ne), Krypton (Kr) and Xenon (Xe) are found in ... ≤20,O2+Ar≤5,H2≤2,TC≤3,H2O≤3,Kr≤50,N2O≤1,Total Residues≤10099.995%N2≤10,O2 ... +Ar≤4,H2≤1,TC≤2,H2 O≤3,Kr≤30,N2O≤1,Total Residues≤5099.999%N2≤3,O2 ... +Ar≤2,H2≤0.5,TC≤1,H2O≤2.6,Kr≤4,N2O≤0.5,Total Residues≤10