ISO 7884-5:1987
Glass; Viscosity and viscometric fixed points; part 5 : Determination of working point by sinking bar viscometer

Standard No.

ISO 7884-5:1987

Release Date

1987

Published By

International Organization for Standardization (ISO)

Latest

ISO 7884-5:1987

Scope

The specified method is suitable for characterizing the low-viscosity range of glass working: A vertically positioned narrow metal rod, i.e. the bar, is allowed to sink under its own weight into the melt. From the rate of sinking the dynamic viscosity is calculated. The teoretical basis relation and the apparatus including method of measurements are described.

ISO 7884-5:1987 history

• 1987 ISO 7884-5:1987 Glass; Viscosity and viscometric fixed points; part 5 : Determination of working point by sinking bar viscometer