Mesh Count
150
Openings per linear inch
Sifting Solutions
150 mesh corresponds to a nominal opening of 100 microns (0.100 mm). In botanical screening, this is generally treated as a fine separation step for dry sift, pollen, and powder handling lines.
Mesh Count
150
Openings per linear inch
Opening
100 microns
0.100 mm
Opening Inch
0.00394
Nominal clear opening
Open Area
34.9%
Wire diameter 0.069 mm
| Mesh count | 150 |
|---|---|
| Nominal opening (micron) | 100 microns |
| Nominal opening (millimeter) | 0.100 mm |
| Nominal opening (inch) | 0.00394 in |
| Nominal wire diameter | 0.069 mm |
| Nominal open area | 34.9% |
A 150 mesh screen is built with 150 openings per linear inch. For this reference, the clear opening is listed at 100 microns, with a nominal wire diameter of 0.069 mm and an open area near 34.9%. These values are used for engineering comparison, not as a substitute for final supplier drawings.
At 100 microns, this screen size tends to tighten the cut point so finer resin-rich fractions can be graded with less oversized carryover. In production terms, it sits in the fine part of the screening range and is usually selected after operators define the target fraction, feed dryness, and deck loading rate.
These formulas explain the unit relationship shown in the table.
Micron from mm
micron = mm x 1000
0.100 mm x 1000 = 100 microns
mm from micron
mm = micron / 1000
100 / 1000 = 0.100 mm
Inch conversion
inch = micron / 25400
100 / 25400 = 0.00394 in
Process notes are assembled directly from the selected opening value so each page stays consistent with the table above.
When a 150 mesh screen is used for pollen collection, the nominal opening is 100 microns. This range is typically reserved for selective finishing passes where very fine particulate control is required.
For dry sift separation, 150 mesh gives a nominal clear opening of 100 microns. At this point the screen is acting as a fine classification layer, so feed consistency and blinding control become more important.
In powder grading work, 150 mesh is roughly equivalent to 100 microns. This opening fits controlled grading steps where mid-size powder fractions need to be standardized before packaging or blending.
For botanical pre-screening, a 150 mesh cloth opens at about 100 microns. At this fineness the screen is no longer a rough pre-screen. It becomes a precision control point inside a multi-stage grading workflow.
140 mesh at 106 microns will pass a coarser cut and hold higher throughput. 160 mesh at 95 microns will shift the cut point finer and tighten material control.
Nominal opening values were curated from commonly referenced industrial wire cloth and U.S. sieve conversion charts. Actual clear opening can vary by weave style, wire diameter, and manufacturing tolerance.
Nominal opening values may vary slightly by weave and wire diameter. For purchase approval, always confirm the actual cloth specification issued by the manufacturer.