Plastics - Cellulose acetate in dilute solution - Determination of viscosity number and viscosity ratio (ISO 1157:1990); German version EN ISO 1157:1999— 5 стр.
Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 1: General principles (ISO 1628-1:1998); German version EN ISO 1628-1:1998— 10 стр.