JJF 1229-2021
Mass and Density Metrological Terms and Their Definitions (English Version)

Standard No.

JJF 1229-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

National Metrological Technical Specifications of the People's Republic of China

Latest

JJF 1229-2021

JJF 1229-2021 history

• 2021 JJF 1229-2021 Mass and Density Metrological Terms and Their Definitions
• 2009 JJF 1229-2009 Mass and Density Terms in Metrology and Their Definitions
• 1970 JJF 1229-1990 1×10^-3>~1 Pa vacuum reference operation technical specification