JIS Test Powder (Class 16,17 Calcium carbonate (heavy))

Reference standard:JIS Z 8901

Material used：Calcium- carbonate ( heavy )

Particle density：2.7～2.8g/cm³

Chemical composition

Chemical composition	% ( mass )
CaO	54～56
MgO	0～3
SiO₂	0～4
AI₂O3	0～3
Fe₂O₃	0～1
Ignition Loss	42～45

Particle size distribution

Oversize(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		1 max.
20	1 max.