Ground glass joints are standardized connectors used in laboratory glassware to create airtight seals between different pieces of equipment. The numbering system ensures compatibility between male and female joints of the same size.
The first number in common size viz 14/20, 19/22 and 24/40 for ground glass joints refers to
Asked in JUNIOR laboratory assistant 2025 · Topic: Measuring Instruments and Scales (Least count and significant figures in measurements)
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Answer: B. Inner diameter (in millimeter) of a female joint or outer diameter of a male joint
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