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Screen Size Comparisons
The chart below shows some international sieve size comparisons which may be of use from time to time. It also illustrates how confusing comparing sieve sizes can become. The confusion with size comparison, unfortunately, does not end with this example. Sieve manufacturers try very hard to come up with tightly controlled standards on their sieves. Even so, woven wire screens require some tolerance in their production. We have all heard stories about matched master sets of sieves, used on the same sample, unable to produce an exactly comparable result. To this may be added the discrepancies that occur when using different sieve shakers and laboratory techniques or, more frequently, damage caused by unsatisfactory cleaning of the sieves. Having experienced some of these problems and devel­oped systems to reduce their effect, Manley Bros. have sought to help minimize the problems of our customers in handling their test sieves by offering a free ultra-sonic test sieve cleaning and masterset matching service. If you think this service may be of use to you call us at today at 1-800-237-SAND.

Nominal Mesh Size In Microns A.S.T.M.
(1961)
Tyler 
(1910)
B.S.S. 
(1962)
D.I.N. 
(1934)
Mesh No. Aperture in Microns Mesh No. Aperture in Microns Mesh No. Aperture in Microns Mesh No. Aperture in Microns
2400 8 2380 8 2362 7 2400 2500
2000 10 2000 9 1981 8 2000 3E 2000
1600 12 1680 10 1651 - 1590  
1400 14 1400 12 1397 12 1400 4 1500
1200 16 1190 14 1168 14 1200 5 1200
1000 18 1000 16 991 16 1000 7 1000
850 20 841 20 833 18 850 - -
800 1/32 790 - -
750 - - - - - - - -
700 25 707 24 701 22 710 - -
600 30 595 28 589 25 600 10 600
500 35 500 32 495 300 500 12 500
400 40 420 35 417 36 420 14 430
350 45 354 42 351 44 355 18E 340
300 50 297 48 295 52 300 20 300
250 60 250 60 246 60 250 24 250
200 70 210 65 208 72 210 30 200
175 80 177 80 175 85 180 35E 170
150 100 149 100 147 100 150 40 150
125 120 125 115 124 120 125 50 120
100 140 105 150 104 150 105 60 100
90 170 88 170 88 170 90 70 90
75 200 74 200 74 200 75 80 75
65 230 63 250 61 240 63 90E 67
50 270 53 270 53 300 53 - -
45 325 44 325 43 360 45 - -
35 400 37 400 38 - - - -

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