Tube Tech produces specially cleaned and degreased copper tube suitable for use in medical and industrial gas applications. These tubes are produced in accordance with ASTM B 819 and are rigorously tested to make sure they are suitable for the exacting requirements of critical medical and gas application industry. These copper tubes generally supplied in as drawn temper and are fitted with plastic caps after cleaning to maintain the allowable residue limit of 0.0035 g/sq. ft of interior tube surface area. Special care and handling is given to these tubes to prevent contamination of the system.