Sizing, Conversion & Reference Information

 

Lab Capabilities for Particle Analysis  [top]

milling-drawings-particle

The Jet Pulverizer Company has numerous methods of particle sizing, the latest addition being a Horiba LA-950 laser sizing unit. We also offer testing with Coulter LS230 and Coulter Multisizers. Other methods include sieve testing, Fisher sub sieve sizer, optical microscope inspection, Scotts Biometric density meter and Tap density.

Key specs are:

  • Horiba LA-950 – Laser diffraction particle size analyzer with wet and dry modules. (0.01µ to 3,000µ)
  • Coulter LS 230 – wet module with particle size range of 0.04µ to 2,000µ.
  • Sieve Testing – Wet and dry screens from 6 to 500 mesh.
  • Fisher Sub Sieve Sizer – 1µ to 25µ
  • Bausch and Lomb Optical Microscope – 1X, 2.5X, 10X & 25X lenses (1µ to 1000µ).
  • Scotts Biometric Density Meter – Cubic inch.
  • Tap Density – Manual 100 ml graduated cylinder.

Reference Information  [top]

Table of Standard Sieves
Microns Inches U.S. Standard ASTME 11-61 British Standard BSS: 410-1989 Tyler
3360 0.1320 6 5 6
2830 0.1110 7 6 7
2380 0.0937 8 7 8
2000 0.0787 10 8 9
1680 0.0661 12 10 12
1410 0.5550 14 12 12
1190 0.4690 16 14 14
1000 0.0394 18 16 16
840 0.0331 20 18 20
707 0.2800 25 22 24
595 0.0232 30 25 28
500 0.0197 35 30 32
420 0.0165 40 36 35
354 0.0138 45 44 42
297 0.0117 50 52 48
250 0.0098 60 60 60
210 0.0083 70 72 65
177 0.0070 80 85 80
149 0.0059 100 100 100
125 0.0049 120 120 115
105 0.0041 140 150 150
88 0.0035 170 170 170
74 0.0029 200 200 200
63 0.0025 230 240 250
53 0.0021 270 300 270
44 0.0017 325 350 325
37 0.0015 400 400 400
32 0.0013 450 440 450
25 0.0010 500 500
20 0.0008 635 635
13 0.0005 1000 1000
10 0.0004 1250
5 0.0002 5000
1 0.00004 1 10000
Table of Relative Sizes
Material Approx. Size Limit Size in Angstroms
Proton 2 x 10-9 2 x-7
Electron 38 x19-7 nm 3.8 x 10-6
Cosmic Ray 5 x 10-5 nm 0.0005
Shortest X-Rays 0.006 nm 0.06
Diameter of Hydrogen Atom 10.8 nn 1.08
Longest X-Rays 8 nm 80
Colloidal Particles 2 – 100 nm 20 – 1,000
Lower Limit of Microscopy 100 nm 1,000
Wave-Length of Violet Light 400 nm 4,000
Wave-Length of Red Light 650 nm 6,500
Bacteria (cocci) 2 µ 20,000
Red Blood Cells 8 µ 80,000
White Blood Cells 25 µ 250,000
Lower Limit of Vision (naked eye) 40 µ 400,000
325 Mesh Opening 44 µ 440,000
Diameter of Human Hair 50 µ 500,000
100 Mesh Opening 149 µ 1,490,000
Table of Equivalent Sizes
Unit Meters Inches Millimeters Microns Nanometers Angstroms Picometers
Meter 1 39.37 103 106 109 1010 1012
Inch 0.0254 1 25.4 25,500 2.54 x 107 2.54 x 108 2.54 x 1010
Millimeters 10-3 0.394 1 1000 10-6 10-7 10-10
Microns 10-6 3.94×10-5 10-3 1 1000 10,000 10-6
Nanometers 10-9 3.94×10-8 10-6 10-3 1 10 10,000
Angstrom Units 10-10 3.94×10-9 10-7 10-4 0.1 1 100
Picometers 10-12 3.94×10-11 10-9 10-6 10-3 0.01 1
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