N5NH5 (N5NH5) weld process mixture is classified in group N5 according to ISO14175. Contains 5% Hydrogen in Nitrogen. Generally suitable for purging and backing of welds in stainless steel. Supplied in a 30 litre Integra® cylinder at 300 bar. Integra® cylinders are safer, smaller and lighter. The Integra® cylinder is designed to be used with a choice of Integra® flow optimisers (available separately) which ensure optimum weld results whilst reducing excessive gas usage too.