Yachticon, antifreeze tester ethylene glycol & propylene glycol

Yachticon frost protection tester for testing cooling water, drinking water and other water systems for frost protection. This antifreeze tester with two scales is suitable for both ethylene glycol (engine antifreeze) and propylene glycol (drinking water antifreeze). To test, simply suck in the liquid and read off the temperature on the scale up to the frost protection level.