Particle size conversion table                                                              
Mesh size

4
6
8
12
16
20
25
30
35
40
45
50
60
70
80
100
120
140
170
200
230
270
325
400
625
1250
2500

Approx.
µm size

4760
3360
2380
1680
1190
840
710
590
500
420
355
297
250
210
177
149
125
105
90
74
62
53
44
37
20
10
5

These particle sizes corresponds
roughly to the following stock items






Titanium 841-2000 µm (10-20 mesh) (soon obsolete)



Titanium 420-841 µm (20-40 mesh) (obsolete)


Titanium 250 µm (obsolete)
Ammonium perchlorate 200 µm, Iron <212 µm
Potassium chlorate <180 µm
Strontium carbonate <150 µm, Cryolite <150 µm
Potassium nitrate >125 µm
All <100 µm: Magnesium, Titanium, Lactose,
*Charcoal (Vine)
*Barium nitrate <90 µm, *Strontium nitrate <90 µm

PVC <63 µm, Magnalium <63 µm

All <44 µm: Aluminium atomized, Aluminium German Black, Antimony(III)sulfide, Sulfur

Aluminium 25 µm (on average) flake,

Magnesium <5 µm, Zinc 2.5-3.7 µm

* = New products as of 2005