(snip)
A while ago I sent Don a list of round metric packages, including an
800-gram
can of tomatoes. Cans are often not round sizes in grams or ounces, since
they are made to round dimensions or volume (I'm not sure which) and how
many
grams they hold depends on the density. The same size can (not same as the
800-gram tomatoes) holds 425 g peas (including water), 430 g refried
beans,
or 432 g corn (again including water). However, in one of the nearby Asian
stores, I saw several cans of the previous size, all holding 800 grams of
various things.
There's also the possibility that non-rounded metric sized
can result if the labelling laws of one country require that a
product be labelled by mass, while other countries label the
same product by volume. You might find that 532 grams is
not a rounded amount but the package in which it is
shipped is a 1 litre container.
