Particle Size Conversion Table

Modern Process Equipment, Inc.
SIZE CONVERSION TABLE I
U.S. Mesh	Tyler Mesh	Inches	Microns
4	4	0.1850	4699
5	5	0.1560	3962
6	6	0.1310	3327
7	7	0.1100	2794
8	8	0.0930	2362
10	9	0.0780	1981
12	10	0.0650	1651
14	12	0.0550	1397
16	14	0.0460	1168
18	16	0.0390	991
20	20	0.0328	833
25	24	0.0276	701
30	28	0.0232	589
35	32	0.0195	495
40	35	0.0164	417
45	42	0.0138	351
50	48	0.0116	295
60	60	0.0097	246
70	65	0.0082	208
80	80	0.0069	175
100	100	0.0058	147
120	115	0.0049	124
140	150	0.0041	104
170	170	0.0035	89
200	200	0.0029	74
230	250	0.0024	61
270	270	0.0021	53
325	325	0.0017	43
400	400	0.0015	38