Am trying to find a source for 25 ft high flow (6-9 lpm) tubing for 10L concentrator. Google/amazon/conc. companies did not yield any results. Some say tubing can be used for regular and high flow. Don't really know the difference. Manual (Invacare) said to use high flow tubing. Do NOT want anything with canula attached.
Anyone know of a source? Or what the interior diameter difference is?