I bought several cases of quart utility jars, similar to mayonaisse jars, that hold 32 fluid ounces of liquid. (Due to an error, they also shipped me 10 cases of 16 ounce jars, which they later told me to keep rather than shipping them back.) Now, when I look at various honey sales sites, they say that a 32 oz. jar will hold 3 pounds of honey, and a 16 oz. jar holds 1 1/2 pounds. But when I fill my large jars, they only hold a little more than 2.75 pounds. Wanting to make sure I was correct, I went to a USDA site, which told me that honey has a specific gravity of 1.42. When I do the math, 32 ounces should weigh about 2.8 pounds. So apparently, my weights are right.
Has anyone ever questioned why 32 oz. jars are marketed as 3 lbs., when they're not? Is this an "accepted industry standard," like 2X4 boards that aren't 2"X4"? How does everybody else label and market their honey? I'm concerned about running afoul of Weights & Measures regulations.
By the way, I found out that our local dollar store sells crappy applesauce in 25 oz. jars with gold metal lids for 50 cents apiece. The labels come off easily and when filled, they hold 2 pounds of honey. They sometimes wonder why I'm buying dozens of jars at a time!