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ISO 12058-1:2018

Plastics — Determination of viscosity using a falling-ball viscometer — Part 1: Inclined-tube method

Jul 12, 2018

General information

90.93     Jun 7, 2023

ISO

ISO/TC 61/SC 5

International Standard

83.080.01  

English   French  

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Published

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Scope

This document specifies the general principles of a method, using an inclined‑tube falling‑ball viscometer, for determining the viscosity of polymers and resins in the liquid emulsified or dispersed state. It is intended for application to liquids over a viscosity measurement range of 0,6 mPa·s to 250 000 mPa·s (temperature range −20 °C to +120 °C) for which the shear stress and shear rate are proportional, i.e. the viscosity is independent of the shear rate. This ideal behaviour is commonly known as Newtonian behaviour. If a liquid differs significantly from this behaviour, different results can be obtained with the different balls of a falling‑ball viscometer or from viscometers with different geometries, such as capillary and rotational viscometers.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 12058-1:1997

NOW

PUBLISHED
ISO 12058-1:2018
90.93 Standard confirmed
Jun 7, 2023

National adoptions

SRPS EN ISO 12058-1:2019  
ISS

Plastics - Determination of viscosity using a falling-ball viscometer - Part 1: Inclined-tube method (ISO 12058-1:2018)

60.60   Standard published

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