Polydisperse Particle Standards - Nominal Size Range:

50 - 350 microns
Detailed review-results by weight/volume

The 50-350μm standard was not part of the original range of ‘Mirror’ standards but was requested later by some laser particle size manufacturers who specialized in large particle size analysis.  The data below was referenced against the NIST calibrated stage reference graticule.

Table of Results 

Percentile

Method

Test

 1 5 10 25 50 75 90 95


(5g samples)

 1

67.8

82.2

94.4

118.3

150.0

190.6

238.9

273.9
2

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
3

68.3

82.8

95.0

118.3

150.0

191.1

238.9

273.9
4

67.8

82.2

94.4

118.3

150.0

191.1

238.3

273.3
5

68.3

82.8

94.4

118.3

149.4

191.1

238.9

275.0
6

67.8

82.2

94.4

118.3

150.0

190.6

238.3

273.3
7

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
8

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
9

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
10

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
11

67.8

82.2

94.4

118.3

150.0

191.1

238.9

273.9
12

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
13

67.8

82.2

94.4

118.3

150.0

191.1

238.9

273.9
14

68.3

82.8

95.0

118.9

150.6

191.7

240.0

276.1
15

68.3

82.8

95.0

118.3

150.0

191.1

238.9

275.0
16

67.8

82.8

95.0

118.3

150.0

191.1

238.9

275.0
17

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
18

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
19

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0
20

67.8

82.2

94.4

118.3

150.0

191.1

238.9

275.0

Mean

67.9

82.4

94.5

118.3

150.0

191.1

238.9

274.7

SD*

0.20

0.26

0.24

0.13

0.19

0.18

0.31

0.69


(10mg samples)

1

67.2

80.8

91.3

120.5

150.8

184.1

230.2

263.1

2

65.9

76.8

88.6

118.1

153.5

186.3

241.2

273.9

3

67.6

81.2

91.9

119.9

150.4

183.7

235.1

270.6

4

66.3

78.3

90.0

119.5

153.8

186.6

236.9

264.6

5

66.4

79.3

90.3

118.8

154.1

193.7

249.7

 282.3

(5x3000 counts)

Mean

66.7

79.3

90.4

119.4

152.5

186.9

238.6

 270.9
15,000 total

SD*

0.62

1.62

1.14

0.84

1.58

3.60

6.57

6.92

Final Mean size

x(n=25)

67.6

81.7

93.7

118.5

150.5

190.2

238.8

273.9

*SD (population)

xs n

0.59

1.44

1.73

0.57

1.24

2.33

2.95

3.560

SD (sample)

xs n-1

0.60

1.47

1.77

0.58

1.26

2.38

3.01

3.57

Uncertainty

95% confidence

1.20

2.94

3.54

1.16

2.52

4.76

6.02

7.14
 

Graphical Review