Volume in liters and weight in KG's for 75 or 100 cu/ft Omega tank on tank side.

Hi, does anyone have a 75 or 100 cu/ft Omega tank and if so could you let me know the volume in liters that is listed on the side of the tank. I'm not talking about tank air capacity, I'm talking about actual bottle volume. It should be next to the weight which is listed in kilograms (kg's). I thought I had a 100 cu/ft tank which is what I was told I was shipped but as there is no specs listed regarding fill capacity on the actual bottle, I want to confirm. My tank has a weight of 4.5KG on the bottle which is the listed weight (converted to 10lbs) for the 75 tank and the fills I'm getting as definitely more in line with those using a tank fill calculator. Just want to make sure I have the right tank as the other parameters listed, length and diameter, are either the same (length) or minimal/tricky to measure. Many thanks for any help.

Best,

Bob. 
 
Yep, and you'll probably find out that the "100" cu/ft Omegas are really 88 cu/ft. Perhaps since they are made in Korea there's a translation issue? Maybe if you fill them to 5000 psi they are the advertised filled volume? j/k. Most of the CFFC tanks made in the USA are 30 minute (44 cu/ft.), 45 minute (66 cu/ft.), and 60 minute (88 cu/ft.). There are some like Interspiro that made 45+ minute tanks, and I think they were 77 cu/ft., but don't quote me on that. 
 
Thanks for taking the time to check and respond!! So I think I do have the 100 then, but the numbers don’t quite tally when you do the conversions from metric. The tank is listed with L for volume and KG for weight but when you look at the specs on the AoA site they don’t translate and the 100 c/ft bottle weighs what the 75 should kg to lbs, but the tanks aren’t labeled 75 or 100 c/ft on them anywhere.I figure that something wasn’t quite right using the tank fill calculator because I’m not getting as many fills as indicted. Thanks again for the responses, appreciated!