Note that measurement methods include a boiling method and a vacuum method, and either method may be used for measurement. Additionally, the test may be omitted for accessories manufactured under the same manufacturing conditions as flat items.
JIS A 1509-3:2008 history
2014JIS A 1509-3:2014 Test methods for ceramic tiles -- Part 3: Determination of water absorption, apparent porosity and bulk density
2008JIS A 1509-3:2008 Test methods for ceramic tiles -- Part 3: Determination of water absorption, apparent porosity and bulk density