JIS TEST POWDERS(STANDARD DUSTS)

*Classification

Class

Material used

Median *
diameter
( µm )

Particle
density
( g/cm³ )

Chemical composition
% ( mass )

Class 1
Class 2
Class 3

Quartz sand

185 to 200
27 to 31
6.6 to 8.6

2.6 to 2.7

SiO2		95min
Fe2O3, Al2O3,TiO2 MgO,Ign.loss		5max

Class 4
Class 9

Talc

7.2 to 9.2
4.0 to 5.0

2.7 to 2.9

SiO2 ••• 60 to 63,	Al2O3 ••• 0 to 3,	MgO ••• 30 to 34
Fe2O3 ••• 0 to 3,	CaO ••• 0 to 2,	Ign.loss ••• 3 to 7

Class 5
Class 10

Fly ash

13 to 17
4.8 to 5.7

1.95 min

SiO2Åc45min
Ign.lossÅc5max

Class 7
Class 8
Class 11

**
KANTO
( Japanese ) loam

27 to 31
6.6 to 8.6
1.6 to 2.3

2.9 to 3.1

SiO2 ••• 34 to 40,	Al2O3 ••• 26 to 32,	MgO ••• 0 to 7
Fe2O3 ••• 17 to 23,	CaO ••• 0 to 3,	Ign.loss ••• 0 to 4

Class 12

Carbon black

Particle size range ••• 0.03 to 0.20 µm
Absorbed amount of DBP ••• 25 to 34 ml/100g
Adsorbed amount of iodine ••• 22 to 30 mg/g

Class 16
Class 17

Calcium-
carbonate ( heavy )

3.6 to 4.6
1.9 to 2.4

2.7 to 2.8

CaO ••• 54 to 56,	SiO2 ••• 0 to 3,	Ign.loss ••• 42 to 45
MgO ••• 0 to 3,	Fe2O3 ••• 0 to 1

*	Particle size distributions are defined by JIS Z 8901.
**	Sintered at 800°C, 2hours.
Note :1)	Class15 Mixed powder is distributed by Japan Air Cleaning Association and contains 72% of Class8, 23% of Class12 and 5% of cotton linter.
2)	Class13 and Class 14 are now absent ones.

*Particle size distribution of Test Powders 1

Particle size distribution of
Class 1, Class 2 and Class 3
( Quartz sand )

Particle size µm	Oversize(on mass basis)%
Particle size µm	Class 1	Class 2	Class 3
5	-	88±5	61±3
10	-	76±3	43±3
20	-	62±3	27±3
30	-	50±3	15±3
40	-	39±3	9±3
45	99 min.	-	-
75	90±3	20max.	3max.
106	80±3	-	-
150	65±3	-	-
212	45±3	-	-
300	1max.	-	-

Particle size distribution of
Class 4 and Class 9
( Talc )

Particle size µm	Oversize(on mass basis)%
Particle size µm	Class 4	Class 9
2	-	79±5
4	-	55±5
5	69±5	-
8	-	23±5
10	40±5	-
16	-	6±3
20	12±5	-
30	-	-
40	3±3	-
75	1max	-

Particle size distribution of
Class 5 and Class 10
( Fly ash )

Particle size µm	Oversize(on mass basis)%
Particle size µm	Class 5	Class 10
2	-	82±5
4	-	60±3
5	84±5	-
8	-	22±5
10	60±5	-
16	-	3±3
20	32±5	-
30	15±3	-
40	8±3	-
106	1max.	-

Particle size distribution of
Class 7, Class 8 and Class 11
( KANTO(Japanese) loam )

Particle size µm	Oversize(on mass basis)%
Particle size µm	Class 7	Class 8	Class 11
1	-	-	65±3
2	-	-	50±5
4	-	-	22±3
5	88±5	61±5	-
6	-	-	8±3
5	-	-	3±3
10	76±3	43±3	-
20	62±3	27±3	-
30	50±3	15±3	-
40	39±3	9±3	-
75	20max.	3max.	-

Class 12 Particle size range
( Carbon black )

0.03

0.20µm

Particle size distribution of
Class 16 and Class 17
( Calcium carbonate( heavy ))

Particle size µm	Oversize(on mass basis)%
Particle size µm	Class 16	Class 17
1	-	80±5
2	76±5	54±5
4	-	18±5
5	40±5	-
8	-	4±3
10	10±5	-
16	-	1max.
20	1max.	-