don't know, but if you really need to know weigh it empty, fill it with water, weigh again, take the difference and divide that by 8.35. that'll give you volume in gallons.
paint strainers from lowes...super cheap, so i don't mind pitching them when i'm through ($.75 added to the bill doesn't break the bank for me). i use the ic at the same time (2 birds, 1 stone type of thing), so it doesn't seem to take as long.