your supplier can give you those information 4 c/ O. z7 h% y9 s7 P4 | % S. } `1 ?8 b! A1 i" J9 j* V% {2 oviscostiy and sound speed and so on. 3 O8 S" R' A1 E0 o; ?+ W- G* T! d, }; d N" n) a8 \7 [% c* q1 H
this kind of information should be shown in your manual stuff