What would be the best way to test endoscopes?

[admin]

Would you just look through an endoscope or do you use a tool to determine the quality?

Please share your opinion about testing endoscopes!

[tester]

You need a really good trained eye. It sometimes is hard to see what's wrong with an endoscope and most of the time you are discovering this to late.

[DKL]

You have to check with Freeze spray to check for water vapor inside the endoscope.
If water vapor is present this can give a lot of problems.