industrial high purity 99.999% gas helium with cylinder 1. Purity: 99.9%, 99.995%, 99.999% 2. Packing: by 40L helim cylinder industrial high purity 99.999% gas helium with cylinderPurity: 99.9%, 99.995%, 99.999%Packing: by seamless steel helium cylinderCapacity by 40L seamless steel helium cylinder: 6CBM