Polydisperse Particle Standards - Nominal Size Range:

3 - 30 microns
Detailed review-results by weight/volume

Table of Results 

 Percentile

Method

Laboratory

 10 25 50 75 90


(by weight)

A

8.63

10.85

13.18

15.61

19.90

I

8.80

11.21

13.94

16.96

20.16

M

8.70

10.82

13.78

17.01

20.41

X

8.60

10.98

13.70

16.72

19.93

Z

9.50

11.36

13.65

16.34

19.29

Mean

8.85

11.04

13.65

16.53

19.94

SD*

0.33

0.21

0.25

0.52

0.37


(by weight)

B

9.17

10.93

13.27

16.36

20.14

C

9.33

11.09

13.44

16.79

20.69

M

8.77

10.47

12.69

15.81

19.76

D

9.70

11.51

13.85

17.20

21.40

X

9.24

11.03

13.55

17.28

21.51

U

9.19

10.92

13.21

16.22

20.01

S

9.59

11.47

13.91

17.20

21.18

W

8.75

10.42

12.59

15.74

19.19

Mean

9.21

10.98

13.33

16.58

20.49

SD*

0.32

0.37

0.45

0.59

0.79


(by volume)

X

10.0

11.6

13.7

16.6

20.4

Q

9.1

10.7

13.0

15.9

21.1

Mean

9.6

11.2

13.4

16.3

20.8

Final Mean size

x(n=15)

9.14

11.02

13.43

16.52

20.34

*SD (population)

xs n

0.41

0.35

0.41

0.55

0.69

SD (sample)

xs n-1

0.43

0.36

0.43

0.57

0.72

Uncertainty

95% confidence

0.86

0.72

0.86

1.14

1.44
 

              
   

Graphical Review
 - Individual Labs

Graphical Review
 - 95% Confidence Band
   

 

               

The Leading European Laboratories in this section were:
AEA Technology UK
Bradford University UK
Clausthal TU Germany
Coulter Electronics UK
Delft TU Holland
HSE Sheffield UK
IFTS France
INRS France
Loughborough University UK
Pavia University Italy
Seescan UK
Whitehouse Scientific UK