scope:

This standard specifies four methods for the determination of the viscosity of phenolic resins, either as a liquid or in solution. It describes the following two types of method: a) Reference methods: 1) Determination using a viscometer with a definite speed gradient 2) Determination using an Ubbelohde capillary viscometer b) Comparitive test methods: 1) Determination using a rotary viscometer 2) Determination using a Hoeppler dropping-ball viscometer. Other methods may be used as long as it is verified that the same test results are obtained.