Helium 4.6 for TIG / MIG welding and helium leak testing – and it fills balloons too. Helium 4.6 (≥ 99.996 %): exchange your empty cylinder or have your own refilled, 2.7–50 L.
High-purity helium 5.0 for gas chromatography, GC-MS, analysers and the laboratory. Helium 5.0 (≥ 99.999 %): exchange your empty cylinder or have your own refilled, 2.7–50 L.
