Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers - Polyethylenes and polypropylenes algolia-search-ignore the method specified

the method specified

1 Foreword

This is Part 2 of the European standard on explosive atmospheres

such that the amount of deposited particulate lead collected on the filter of the sampling equipment is greater than 1 4g if the final determination is made by flame atomic absorption spectrometry

Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers - Polyethylenes and polypropylenes algolia-search-ignore the method specified1 Scope This part of ISO 1628 defines particular conditions for determining the reduced viscosity (also known as viscosity number) and intrinsic viscosity of polyethylenes and polypropylenes at 135 C in dilute solution. The viscosity of polymer solutions may be affected by additives present in the sample. The value of a reduced viscosity determined by this method may therefore be unreliable if the sample contains fillers or other additives. NOTE