The British pint is about 20% larger than the American pint since the two systems are not compatible. Almost all other countries have standardized on the metric system, so the size of what may be called a pint varies depending on local custom.
It is usually measured by the depth (in mm) of the water layer that can enter the soil in one hour. An infiltration rate of 15 mm/hour means that a water layer of 15 mm on the soil surface, will take one hour to infiltrate. In dry soil, water infiltrates rapidly.
Effect of Soil Texture on Moisture Infiltration. Evaporation from the soil surface mainly affects the water in the top 10 to 13 cm (4 to 5). To be effectively stored in the soil, rainfall or irrigation must be heavy enough, or frequent enough, to wet the soil below 10 to 13 cm (4 to 5).