Microspheres on Facebook Become a fan of
Cospheric Microspheres 









You are here: Home > Size Classification
Custom particle size classification service:

We offer small custom particle classification size services to grade your particles, powders or aggregates to size.  We can grade your particles to any size between 20um (0.0008 inches) and 5.6mm (0.220 inches).  The table below shows standard cut sizes we can grade your material to.   Custom cut sizes are available by request.  We specialize in small runs but can also handle larger quantities.  We are your low cost toll particle classifier.

Contact us for a quote.

micron
 (0.001mm)
Inches 
Mesh No.
20um (0.020mm)
0.00079"
635
22um (0.022mm)
0.00087"
---
24um (0.024mm)
0.00094"
---
26um (0.026mm)
0.00102"
---
27um (0.027mm)
0.00106"
500
28um (0.028mm)
0.00110"
---
30um (0.030mm)
0.00118"
---
32um (0.032mm)
0.00126" 450
34um (0.034mm)
0.00134"
---
36um (0.036mm)
0.00142"
---
38um (0.038mm)
0.00150" 400
45um (0.045mm)
0.00177" 325
50um (0.050mm)
0.00197" ---
53um (0.053mm)
0.0021" 270
63um (0.063mm)
0.0025"
230
75um (0.075mm)
0.0030"
200
90um (0.090mm)
0.0035"
170
106um (0.106mm)
0.0042"
140
125um (0.125mm)
0.0049"
120
150um (0.150mm)
0.0059"
100
180um (0.180mm)
0.0071" 80
212um (0.212mm)
0.0083" 70
250um (0.250mm)
0.0098" 60
300um (0.300mm)
0.0118" 50
355um (0.355mm)
0.0140" 45
425um (0.425mm)
0.0167" 40
500um (0.50mm)
0.0197" 35
600um (0.60mm)
0.0236" 30
710um (0.71mm)
0.0280" 25
850um (0.85mm)
0.0335" 20
1000um (1.00mm) 0.0394" 18
1180um (1.18mm) 0.0465" 16
1400um (1.40mm) 0.0551" 14
1700um (1.70mm) 0.0669" 12
2000um (2.00mm) 0.0787" 10
2360um (2.36mm) 0.0929" 8
2800um (2.80mm) 0.1102" 7
3350um (3.35mm) 0.1319" 6
4000um (4.00mm) 0.1575" 5
4750um (4.75mm) 0.1870" 4
5600um (5.60mm) 0.2205" 3-1/2