Hydrometer Alcohol Meter Test Kit: Distilled Alcohol American-Made 0-200 Proof Pro Series Traceable Alcoholmeter Tester Set with Glass Jar for Proofing Distilled Spirits - Made in America

This product works great. I saw some reviews claim it was off by 4 or more proof, however I don’t think they took the temperature into account. You have to follow the directions properly for any measuring device to be accurate. The temperature of the alcohol will affect the reading. So if the ambient temperature is 75 or 80 degrees you have to realize that your alcohol is not going to be 60 degrees which is the baseline temperature. So I tested this on some 100 proof white whiskey that is going into a mini aging barrel. The hydrometer read at 108, then I took the temperature of the whiskey which was 80 degrees. Then using the chart this company has on their website it gave me a reading of 99.8 proof.... accurate to +/- .2 as they claim. So make sure you test completely and accurately before you claim it isn’t accurate. As noted by other reviewers spend the extra $10 and get the glass tube, you need it. Great product!!

Easy to use and accurate.

A high quality hydrometer set, I use this to check barrel proof in my home-aged bourbons, and to adjust them to correct bottling proof. It's important to handle it very carefully and slowly release the measuring "bulb" in the liquid-filled test vial so the bulb doesn't hit the bottom of the vial, which can break the bulb easily. Also, note that you do need to know the ambient air temperature and temperature of the liquid first, and use the included "adjustment chart" to get an accurate determination of proof. Different temperatures have an impact on the accuracy of measurement. A very useful tool for a home brewer or distiller.

Arrived quickly and in one piece (surprising the way shippers handle what they make their living off of) completely satisfied in this purchase, and delivery !

The hydrometer is very easy to use. The instructions are easy to follow, too. However; the glass cylinder that came with our hydrometer is terribly skewed and leans left to the point that is barely stands by itself. We have to hold the cylinder down to make sure it stays upright while pouring ethanol into it. Other than this, the product itself is good. Hydrometer is not certified, but gets the job done. The Conversion Table offered is not in a logical format, somewhat difficult to read, and was full of typos and blanks in odd places (e.g., ! and / in proof values). I had to convert the PDF into a spreadsheet and clean it up myself so I can use it more effectively. Overall, the product is good to use, but I got defective pieces.

Nice all glass with easy to read graduations...be gentle.... accurate readings.

Exactly what I needed. Hopefully I'll be more careful with this one.

Perfect.