📊 DEF Refractometer: Accurate Measurement of Diesel Exhaust Fluid Concentration in Diesel Engines Review

Using bad DEF in your diesel car can be a very expensive and inconvenient problem. This is a very inexpensive way to avoid all the problems associated with a bad DEF. I was very surprised how easy it is to use. Worth the price.

This is a good offer. Of course, it's easy to use (like any other refractometer), but the price is surprisingly low compared to others. I checked the calibration before using, everything works. Used and found readings are accurate compared to expensive tools found in stores.

I like this one more than the 4-in-1 which has multiple gauges for different liquids, the window gauge is for DEF only and larger to make it easier to read. Tested with distilled water and factory calibrated before first use. I was hesitant to buy it at first as it has a bad rating from Fakespot reviewers but it turned out to be a good buy.

I was skeptical at first because of the low price. Usually these refractometers are expensive, especially when bought by a company for a store. I'm just tired of the store being either used or damaged. I got this one and used some distilled water to calibrate it and it was almost perfect out of the box. Tested with new pure DEF and it shows 32.5% which is what a good DEF should test.

Arrived the next day after ordering, well packaged. Already calibrated, tested with distilled water according to instructions and requires no adjustment. The device makes a robust and well-made impression. Tested 2.5 gallon BlueDef, bought same day, only a few months old and refractometer showed 32.5%, right to spec. Also tested a 2.5 gallon container bought in 2019 when towing a motorhome that Covid had not used in the past two years. He also showed 32.5%, so he used it to fill up a DEF tank…

I like this unit more than the 4 in 1 which has multiple sensors for different liquids, the window sensor is for DEF only and larger to make it easier to read. Tested with distilled water and factory calibrated before first use. I was hesitant to buy it at first as it has a bad rating from Fakespot reviewers but it turned out to be a good buy.

Mine came calibrated like the others. I was thrilled to see that the DEF I was using was real DEF and not water. I have an RV and can't buy large quantities so I buy jugs from a big store. I know I'll take that tool with me and check every pitcher before I pour it into my tank. The verification takes seconds. I found that I needed a flashlight to illuminate the end of the prism to make reading a little brighter for my eyes.

I was skeptical at first because the price was so low. Usually these refractometers are expensive, especially when bought by a company for a store. I'm just tired of the store being either used or damaged. I got this one and used some distilled water to calibrate it and it was almost perfect out of the box. Tested with new pure DEF and it shows 32.5% which is what a good DEF should test.