Tester for moisture in our brake and clutch fluid

And here’s all of the product reviews...

You very what you pay for in most cases.

RNJ12

If I suspect water in my fluids I just change the fluid, no real need to check, just change it. It is not like brake fluid costs a lot, actually pretty cheap. Brake fluid is hydroscopic so it will take on water even in a loosely capped container, or a poorly maintained brake system.

LC

Technically, the word would be hygroscopic...