3.4.1 The test should be carried out according
to standard ASTM D 445-86 or ISO 3104. Kinematic viscosity should
not exceed 200 mm2/s.
3.4.2 The method for determining viscosity of
non-Newtonian foam concentrates or kinematic viscosity exceeding 200
mm2/s should be to the satisfaction of the Administration.
A suitable method is described in standard EN 1568.