Air cylinders testers are rare, so for many years, and from different venues, I have sent my scuba tanks to the same company for test. And for many years the service has been problematic. Delays in collection, missed return dates. Cylinders leaking on filling, manifolds not sealed etc.
Finally enough was enough, bullet bit I commissioned our own in house testing service, paid out the money for the gear and the training, inspection, authorisation and bingo we now do our own. We are IDEST Test Centre 6W. Now we are opening cylinders for the first time and peering in, looking for rust, checking the valve threads. What do we find, rust and bad valves. How come in the last 6 years I do not recall ever having one being brought back needing new valves or requiring rust blasted out? We learned in our training that it is a requirement, when servicing a valve to replace all the innards. How come I have not seen that done before? Well all I can say is this. When we service your cylinder, we will do it quickly, efficiently and thoroughly. If there is rust inside, we will find it and rectify it. The valve will be stripped, cleaned and have the service parts changed. The valve and cylinders threads will be tested and the cylinder will be 02 clean. It might not be quite so cheap, but it wont be hiding something nasty!