Antifreeze Refractometer 4-in-1 Coolant Tester Refractometer for Checking Freezing Point of Automobile Antifreeze Systems, Anti Freeze Tester Refractometer for Battery Acid, Ethylene Propylene Glycol

Used to pay £18 each year to get levels checked on a caravan site. Paid for itself already. You just need some deionised water to calibrate it and a bit to wash the pipette out several times. Some good videos on YouTube, really easy to use and well made . Did come pre calibrated but wanted to check myself. Comes in a study case with pipette,screwdriver,unit, lens wipe all Hiden in case.

The device itself is reasonably well made. You do need a good light source such as a torch to see the display clearly. The pipette is a very flimsy all in one very thin plastic affair which is functional, but not made to the quality that I would have preferred. It looks like something you might expect to find in a cheap Xmas cracker. A small screwdriver is supplied for adjusting calibration - which is easy to do.

Easy to use and nice to have a more accurate reading of anti freeze levels. Also can read S.G for other liquids.

Caravan

Easy to set up and use. Purchased to check antifreeze levels in caravan central heating. Checked other friends systems too to which some needed topping up. As far as I can tell it is quite accurate.

Used to check anti freeze level on heating system, very accurate.

Great value for money very usefull to the trade

Bought this for measuring glycol in heating systems as a plumber and also you can check the car antifreeze aswell, it works perfectly well worth the money !