Mesh Count
130
Openings per linear inch
Sifting Solutions
130 mesh corresponds to a nominal opening of 115 microns (0.115 mm). In botanical screening, this is generally treated as a fine separation step for dry sift, pollen, and powder handling lines.
Mesh Count
130
Openings per linear inch
Opening
115 microns
0.115 mm
Opening Inch
0.00453
Nominal clear opening
Open Area
34.7%
Wire diameter 0.080 mm
| Mesh count | 130 |
|---|---|
| Nominal opening (micron) | 115 microns |
| Nominal opening (millimeter) | 0.115 mm |
| Nominal opening (inch) | 0.00453 in |
| Nominal wire diameter | 0.080 mm |
| Nominal open area | 34.7% |
A 130 mesh screen is built with 130 openings per linear inch. For this reference, the clear opening is listed at 115 microns, with a nominal wire diameter of 0.080 mm and an open area near 34.7%. These values are used for engineering comparison, not as a substitute for final supplier drawings.
At 115 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
0.115 mm x 1000 = 115 microns
mm from micron
mm = micron / 1000
115 / 1000 = 0.115 mm
Inch conversion
inch = micron / 25400
115 / 25400 = 0.00453 in
Process notes are assembled directly from the selected opening value so each page stays consistent with the table above.
When a 130 mesh screen is used for pollen collection, the nominal opening is 115 microns. This range is typically reserved for selective finishing passes where very fine particulate control is required.
For dry sift separation, 130 mesh gives a nominal clear opening of 115 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, 130 mesh is roughly equivalent to 115 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 130 mesh cloth opens at about 115 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.
120 mesh at 125 microns will pass a coarser cut and hold higher throughput. 140 mesh at 106 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.