Hi Grant,
The problem is that credible companies commonly have product faults. I want to confirm what would be best procedures when purchasing medical devices, to confirm reliability, accuracy, and safety. Thank you for your reply. Once I've obtained full info I'll pass the results onto others. I have also posted this same info on: ResearchGate Also see: How do you know that medical devices are reliable, accurate, and safe? | ResearchGate
Cheers, Phil (New Zealand)