Testing glycol levels in printer chiller tanks with the @nucalgon refractometer... I had the hardest time getting a pic/video of the reading but if you notice the tiny bit I did get, there's not much glycol in my sample . That means that someone has likely been topping up the tank with fresh water, diluting the mix .. which means there is likely a leak in the system. Doing these tests help catch issues like this before they become a major problem . . . . . . . . . #refractometer #glycol #antifre