Letter symbols for physical quantities - Part 9: Symbols for equivalent circuits of piezoelectric crystals
Edition 2003-01

Quartz-clocks; requirements, testing, marking
Edition 1987-05

Quartz clocks; alarm clocks; requirements, testing
Edition 1989-12

Quartz wrist watches; requirements, testing, marking
Edition 1988-06

Laboratory ware made from fused quartz and fused silica; straight bore stopcocks made from fused quartz
Edition 1979-04

Laboratory ware made from fused quartz and fused silica; T-bore stopcocks made from fused quartz
Edition 1979-05

Measuring method for determination of solarisation effect of fused silica optical fibers; Text in German and English
Edition 2017-01

Products used for treatment of water intended for human consumption - Silica sand and silica gravel; German version EN 12904:2005
Edition 2005-06

Characterization of bulk materials - Determination of a size-weighted fine fraction and crystalline silica content - Part 1: General information and choice of test methods; German version EN 17289-1:2020
Edition 2021-02

Characterization of bulk materials - Determination of a size-weighted fine fraction and crystalline silica content - Part 2: Calculation method; German version EN 17289-2:2020
Edition 2021-02