OK ... let's be clear:-
1) Who are your customers?
2) What do you mean by "testing"?
3) What happens when the item "fails"?
Are you talking about electrical safety testing, a "quick functional test" (followed by a sticker) ... or what?
What do you do with (how do you test) nebulizer compressors, for example?
As an old-school biomed, I have never seen much point in testing anything, unless I could also follow through and "adjust" it (calibrate it, repair it, or otherwise take whatever action is appropriate) as well.
We used to call it *PM.
In my opinion, anything else is a waste of the biomed's time (and the customer's money).
Back in my days as a hospital-based biomed, the only kit I would "out-source" is the stuff that I (we) couldn't deal with myself (ourselves):- the big analyzers in the lab, the C.T. scanner (maybe), and sometimes the ventilators. In other words, "high-end", sophisticated gear. Some other items got "sent away" for repair when needed (endoscopes, anaesthetic vaporizers immediately come to mind). Plus some of the test kit for annual calibration, of course.
So I assume that you are not addressing hospital biomeds here, but rather doctors surgeries and such. Unless, of course, what you're really after are biomed departments looking to "off-load" high volume, minor items (just as many do with medical gas regulators, flowmeters
etc.). But again, I can't imagine any self-respecting biomed wanting to "farm-out" his infusion pumps and syringe drivers like that.
I have no idea about your set-up, how "big" you are, or how long established (and unless you tell us, I can only guess); but in general, my advice would be:- pick on one line of kit, and become an expert in that. If I were you, I would stay clear of infusion equipment until (unless) you are confident that you know what you are doing.
*
Or, if you like (as I do):- I/PM - for Inspection/Preventive Maintenance.
