Test Price:
Up to 6 sieves: $62 per analysis
Acceptable Matrices:
Free-flowing powders and particulates
Unacceptable Matrices:
Liquids, particle sizes that are >25 mm
Detection Limit:
A full range of sieves with openings from 0.037 to 25mm is available.
Sample Size Requirements:
100 grams
Equipment:
Rotap
Reportable Units:
% retained on each sieve
Turnaround Time:
7-9 business days
Is rush testing available?
Yes
Method Reference:
Internally-developed method
Method Description:
Up to six sieves can be stacked on the Rotap in descending size order. The sample is placed on the top sieve and is sifted down via the shaking and tapping action of the instrument. Sample weights retained on the sieves are recorded. A full range of sieves with openings from 1 inch to 0.037 mm are available.
Information Required by Submitter:
We need to know the sieve sizes to be tested, either US Std. sieve numbers or particle size range to be covered (micrometers, millimeters, or inches). The use of flow agents or run times can be specified to meet method requirements.
Additional Information:
This method sizes particulate samples and powders by sieve separation. However, for sticky or high-fat samples, the Alpine tester is more accurate.
| Sieve# | Opening(“) | Opening(µm) |
| 1-inch | 1.000 | |
| 3/4-inch | 0.750 | |
| 5/8-inch | 0.625 | |
| 1/2-inch | 0.500 | |
| 7/16-inch | 0.438 | |
| 3/8-inch | 0.375 | |
| 1/4-inch | 0.250 | |
| #4 | 0.187 | 4750 |
| #5 | 0.157 | 4000 |
| #6 | 0.132 | 3350 |
| #7 | 0.111 | 2800 |
| #8 | 0.0937 | 2360 |
| #10 | 0.0787 | 2000 |
| #12 | 0.0661 | 1680 |
| #14 | 0.0555 | 1410 |
| #16 | 0.0469 | 1190 |
| #18 | 0.0394 | 1000 |
| #20 | 0.0331 | 840 |
| #25 | 0.0280 | 710 |
| #30 | 0.0232 | 590 |
| #35 | 0.0197 | 500 |
| #40 | 0.0165 | 420 |
| #45 | 0.0138 | 350 |
| #50 | 0.0117 | 297 |
| #60 | 0.0098 | 250 |
| #70 | 0.0083 | 210 |
| #80 | 0.0070 | 177 |
| #100 | 0.0059 | 149 |
| #120 | 0.0049 | 120 |
| #140 | 0.0041 | 105 |
| #170 | 0.0035 | 88 |
| #200 | 0.0029 | 74 |
| #230 | 0.0024 | 62 |
| #270 | 0.0021 | 53 |
| #325 | 0.0017 | 44 |
| #400 | 0.0014 | 37 |
Contact Us:
If you have questions about our testing services, please contact us at +1 (800) 245-5615.