Methods for chemical analysis of tantalum and niobium—Part 7:Determination of phospherus content in niobium—4-Formyloxy-pentyl ketone-[2] extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrometry

Standard published on 6.3.2020

Methods for chemical analysis of tantalum and niobium - Determination of carbon and sulphur contents

Standard published on 31.3.2008

Methods for chemical analysis of tantalum and niobium - Determination of iron, chromium, nickel, manganese, titanium, aluminum, copper, tin, lead and zirconium contents in tantalum

Standard published on 31.3.2008

Geometric size measuring methods of precious metals and their alloy materials

Standard published on 31.3.2008

Testing method for contact resistance of precious metals electrical contact materials

Standard published on 20.8.2021

Manganese ores--Determination of total iron content--Potassium dichromate titrimetric method and 110-phenanthroline spectrophotometric method

Standard published on 11.9.2002

The specification for industrial healthand safety technology in glass factory

Standard published on 24.5.1994

Speed meters for motor vehicle

Standard published on 16.4.2008

Speedometer for motor vehicle and motorcycle
Execute Date: july 2027

Standard published on 30.4.2026

Strength requirement and test method of automobile seats,their anchorages and any head restraints

Standard published on 14.10.2019