Standard No.:	GB/T 21354-2008
English Name:	Powders - Determination of tap density
Chinese Name:	粉末产品振实密度测定通用方法
Chinese Classification:	G10    Inorganic chemicals in general
Professional Classification:	GB    National Standard
ICS Classification:	71.060.01 71.060.01    Inorganic chemicals in general 71.060.01
Issued by:	AQSIQ; SAC
Issued on:	2008-1-11
Implemented on:	2008-7-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	60.00
Delivery:	via email in 1 business day

1 Scope



This standard specifies a method for the determination of tap density, i.e. the density of a powder that has been tapped in a container under specified conditions.



2 Principle



A specified amount of powder in a container is tapped by means of a tapping apparatus until no further decrease in the volume of the powder takes place. The mass of the powder divided by its volume after the test gives its tap density.



The tapping may be carried out by hand.



3 Symbols



See Table 1.

Foreword II
ISO Foreword III
1 Scope
2 Principle
3 Symbols
4 Apparatus
6 Analytical Procedures
7 Calculation of Results