IUPAC definition : Non-SI unit of mass (symbol Da), equal to the unified atomic mass unit (atomic mass
constant). It is often used in biochemistry and molecular biology although it was
never approved by the Conférence Général des Poids et Mesures.;
Non-SI unit of mass (symbol Da), equal to the unified atomic mass unit (atomic mass
constant). It is often used in biochemistry and molecular biology although it was
never approved by the Conférence Général des Poids et Mesures.