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See Chinese contents: GB/T 42387-2023 GB/T 42387-2023: Volumetric glass -- Technical requirements for quality classification
This document specifies the technical requirements for quality classification of volumetric glass and describes the test methods. This document is applicable to the quality classification and test of volumetric glass (burettes, graduated pipettes, one-mark pipettes, one-mark volumetric flasks, measuring cylinders and measuring cups).
