Refer to the table below for the recommended test sieve re-certification schedule.
|
US Standard Sieve Designation No. |
Number of Uses |
or
|
Months in Use |
|
5” to ¼” |
80 |
36 |
|
|
#3.5 to #12 |
70 |
30 |
|
|
#14 to #40 |
60 |
24 |
|
|
#45 to #140 |
50 |
18 |
|
|
#170 to #325 |
35 |
12 |
|
|
#400 to #635 |
20 |
6 |