Testing Brake Fluid for Water Saturation: Old, New, Stored, and Used!

I test some Motul RBF600 in various states of age and use to try and see at what point hydrophilic/hydroscopic brake fluid is saturated. I test old fluid left exposed to the air, old fluid stored in as sealed a manner as I could, new fluid, and fluid just after being bled out of my NSX. Again, I'm not currently sponsored by anyone up to and including Motul.

Motul:
https://www.motul.com/

The FIRM:
https://gorally.com/

Brake Fluid Tester like mine:
https://www.amazon.com/Tester-Indicat...

Lap of the World
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0:00 Intro (that didn't age well)
1:09 New Tool!
1:44 Brake Fluid 101 and why testing is important
5:22 How the tester works
6:22 The test samples / conditions
10:00 Testing the fluid
13:02 Asking more questions from the results
14:15 How long does it take exposed brake fluid to spoil?
15:10 What does this mean for tech inspections using these fluid testers?
16:28 Closing thoughts