GB/T 14635.3-1993
Heavy rare earth metals and their compounds. Determination of total rare earth contents. EDTA volumetric method (English Version)

Standard No.

GB/T 14635.3-1993

Language

Chinese, Available in English version

Release Date

1993

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2008-12

Replace By

GB/T 14635-2008

Latest

GB/T 14635-2020

Scope

This standard specifies the total content of rare earth elements in mixed rare earth metals mainly composed of heavy rare earth holmium, erbium, thulium, ytterbium and lutetium and the total content of rare earth oxides in their compounds (oxides, hydroxides, fluorides, chlorides). test methods. This standard applies to the total content of rare earth elements in mixed rare earth metals mainly composed of heavy rare earth holmium, erbium, thulium, ytterbium and lutetium and the total content of rare earth oxides in their compounds (oxides, hydroxides, fluorides, chlorides). Determination, the determination range is shown in Table 1.

GB/T 14635.3-1993 history

• 2020 GB/T 14635-2020 Rare earth metals and their compounds—Determination of total rare earth content
• 2008 GB/T 14635-2008 Rare earth metals and their compounds.Determination of total rare earth contents
• 1993 GB/T 14635.3-1993 Heavy rare earth metals and their compounds. Determination of total rare earth contents. EDTA volumetric method

GB/T 14635.3-1993 Heavy rare earth metals and their compounds. Determination of total rare earth contents. EDTA volumetric method was changed to GB/T 14635-2008 Rare earth metals and their compounds.Determination of total rare earth contents.

GB/T 14635.3-1993 -All Parts