Sieve Size and Metal Weights

MM and Sieve Size
Sieve No MM Carat P/CT Sieve No MM Carat P/CT
+0.1.5 Θ 1.1 0.0066 200 +11-11.5 Θ 2.7 0.0774 16
+1.5-2.5 Θ 1.2 0.0086 150 +11.5-12 Θ 2.8 0.0836 15
+2.5-3.5 Θ 1.25 0.0098 125 +12-12.5 Θ 2.9 0.0983 13
+3.5-4 Θ 1.3 0.0125 110 +12.5-13 Θ 3.- 0.1100 11
+4-4.5 Θ 1.4 0.0136 90 +13-13.5 Θ 3.1 0.1177 10
+4.5-5 Θ 1.5 0.0145 80 +13.5-14 Θ 3.2 0.1290 9
+5-5.5 Θ 1.5 + 0.0157 70 +14-14.5 Θ 3.3 0.1457 8
+5.5-6 Θ 1.6 0.0188 50 +14.5-15 Θ 3.4 0.1533 7.5
+6-6.5 Θ 1.7 0.0211 48 +15-15.5 Θ 3.5 0.1646 7
+6.5-7 Θ 1.8 0.0267 45 +15.5-16 Θ 3.65 0.1820 6
+7-7.5 Θ 1.9 0.0305 35 +16-16.5 Θ 3.7 0.1989 5.5
+7.5-8 Θ 2.- 0.0347 33 +16.5-17 Θ 3.8 0.2060 5.2
+8-8.5 Θ 2.1 + 0.0418 30 +17-17.5 Θ 3.9 0.2300 4.7
+8.5-9 Θ 2.2 0.0464 25 +17.5-18 Θ 4.- 0.2480 4.5
+9-9.5 Θ 2.3 0.0511 22 +18-18.5 Θ 4.1 0.2560 4.2
+9.5-10 Θ 2.4 + 0.0581 20 +18.5-19 Θ 4.2 0.2650 4
+10-10.5 Θ 2.5 + 0.0651 18 +19-19.5 Θ 4.3 0.3000 3.7
+10.5-11 Θ 2.6 0.0726 17 +19.5-20 Θ 4.4 0.3200 3.3
± 10% Variation