0-40% DEF Refractometer AdBlue Urea Tester for Diesel (Model AMR001)

Works like is should.

Arrived on time and put to immediate use. It’s easy to use and the instructions are clear. Three different samples from three different sources produced similar results. I won’t ever add DEF again without testing it first. Thank you.

Works as intended

Arrived on time looks good feels like good quality. Will update later on functionality

Came fast and does what it's supposed to

Works as advertised and feels like it's a quality build.

Same tool snap on is selling for a fraction of the price. Excellent quality

I use this several times a day to test DEF systems for DEF dilution, it’s fast and accurate

This item seems to be of good quality but we'll never know for sure. There was not one word of English in any of the accompanying literature. Everything including the instructions was in what I assume to be Chinese. It's going back.

Good product

Ok

Funktioniert einfach, praktische Schachtel dabei.

Easy to use gadget which says accuracy