Active standard | Published: 26/11/1987

ISO 7884-5:1987

Glass — Viscosity and viscometric fixed points — Part 5: Determination of working point by sinking bar viscometer
(Verre — Viscosité et points viscosimétriques fixes — Partie 5: Détermination de la température de travail a l´aide d´un viscosimetre a enfoncement de barreau)

Available languages: English

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Detail information

Designation: ISO 7884-5:1987

Publication date: 26/11/1987

Pages: 5

Country: International technical standard

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Anotation

Description / Abstract: 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.

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