WOOD laminate density 1500 KG/M3 MAX ?

I just opened and measured the last specimen. I got roufghly 1497 kg/m3 for the density. Previous measurement 1560 kg/m3 was only 1317 kg/m3 when measured with university scale ( showing also hundreds of a gram ). So making wood denser than 1500 kg/m3 may be a bit challenging. I figure the 1320 density onwards there is no chance that water could enter the composite if the glue is spread evenly ( which is another challenge ).