API RP 13C is an America standard for shaker screen test and label , the API RP 13C complied shaker screen have to be tested and labeled as per the screen standard . The shaker screen API no. is related to sieve cut point to reach a drilling cuttings separation as per different drilling conditions . The cut point test of shaker screen will be using aluminium oxide , rotap , and a set of ASTM mesh sieve . Normally we use the D 100 cut point to make shaker screen in different mesh size to separate screen solids . The API number is related to D 100 cut point .
API Number And D 100 Cut Point Related Size
API 20 for D 100 separation from 780.0 to 925.0 microns , API 25 for D 100 cut point from 655.0 to 780.0 microns , API 30 for D 100 cut point from 550.0 to 655.0 microns , API 35 for D 100 cut point from 465.5 to 555.0 micron , API 40 for D 100 cut point from 390.0 to 462.5 micron , API 45 from 327.5 to 390.0 micron , API 50 for 275.0 to 327.5 micron , API 60 for 231.0 to 275.0 micron , API 70 for 196.0 to 231.0 micron , API 80 for 165 to 196 micron , API 100 from 137.5 to 165.0 micron , API 120 from 116.5 to 137.5 micron , API 140 from 98.0 to 116.5 micron , API 170 for 82.5 to 98.0 micron , API 200 for 69.0 to 82.5 micron , API 230 from 58.0 to 69.0 micron , API 270 from 49.0 to 58.0 micron , API 325 for 41.5 to 49.0 micron .
The above API number and D 100 cut point just for reference .
