How fast does brake fluid dissolve certain tubing?

I have read that DOT 3 brake fluid will dissolve vinyl tubing, so I won't use it in my brake system.

But how fast does vinyl tubing dissolve in DOT 3? A couple days ago I put a piece of vinyl tubing in brake fluid. I also put a piece of Tygon tubing in fluid...as a control/comparison.

So far the vinyl has not turned into a pile of goo. Perhaps it's gotten a bit softer, but only a bit.

I'll run this experiment a bit longer, but not as long as the famous Pitch Drop Experiment:
https://en.wikipedia.org/wiki/Pitch_drop_experiment

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