ASTM E 671 : 1998 : R2022
Current
The latest, up-to-date edition.
Standard Specification for Maximum Permissible Thermal Residual Stress in Annealed Glass Laboratory Apparatus
Hardcopy , PDF
English
02-02-2022
1.1This specification covers a limit for thermal residual stress in reusable annealed glass laboratory apparatus as determined by prescribed photoelastic measurement procedures.
1.2In broad classification, the laboratory glassware items covered by this specification, but not limited to, are:
| beakers | Imhoff cones |
| bottles, aspirator | impingers |
| bottles, dropping | jars, battery |
| bottles, gas washing | jars, bell |
| bottles, infusion | jars, chromatography |
| bottles, milk test | jars, cylindrical |
| bottles, reagent | joints, ball and socket or standard taper |
| bottles, weighing | manometers |
| bulbs, absorption | percolators |
| bulbs, leveling | pycnometers |
| bulbs, sampling | stopcocks |
| burets | tubes, centrifuge |
| condensers | tubes, chromatography |
| crystallizing dishes | tubes, color comparison (turbidity) |
| culture dishes | tubes, combustion (ignition) |
| custom apparatus | tubes, connecting and adapter |
| cylinders, graduated | tubes, digestion |
| and plain | tubes, drying |
| desiccators | tubes, fermentation |
| extraction tubes | tubes, thistle (spray traps) |
| flasks | vapor traps |
| fritted ware | viscometers |
| funnels | watch glasses |
| generators, Kipp | |
| grinder, tissue |
1.3This specification recognizes that photoelastic measurements are proportional to the difference of the principal stresses. The limit imposed represents a safety factor to cover a situation in which one of the principal stresses may be larger than the apparent stress.
1.4This specification applies only to annealed glassware that is intended for sale as such. It excludes glassware that has been thermally tempered, ion-exchanged, or laminated with glass layers of differing expansion. The intent of this specification is to limit the residual stresses for safe consumer use in annealed glass, as it leaves the manufacturer.
1.5Stresses introduced by thermal expansion differences within the glassware are covered by this specification. Graded and glass-to-metal seals are excluded.
1.6This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Important note : All end users must be registered with an Account prior to user licenses being assigned.Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.