Because Powertex and Paverpol are imported from Europe all the containers are in liters.  To make it easier to relate to the U.S. traditional measurements, please note these conversions.

1/4 liter = .5 pint
1/2 liter = 1.056 pint
1 liter = 1.06 quart
4 liters = 1.05 gallon
5 liters = 1.32 gallons
20 liters = 5.28 gallons