Is 1000 mesh finer than 800 mesh?

Higher mesh counts mean smaller openings — compare micron columns when unsure.

Can I buy exact micron cloth?

Most vendors quote mesh counts — convert using standardized charts then confirm measurements.

Does humidity affect sieve tests?

Yes — hygroscopic powders cake and skew retained masses.

Which ASTM or ISO doc applies?

ASTM E11 governs many North American test sieves while ISO 3310-1 covers woven wire internationally — cite whichever your PO references.

Why trust MeshToMicron.org?

We expose transparent handbook rows plus disclaimers — always reconcile against your supplier calibration packet.

Quick answer

1000 mesh ≈ 11 µm

According to common US sieve references, 1000 mesh correlates with about 11 micrometers (0.011 mm / 0.000433 in). Validate critical specs independently.

Reference opening

Mesh: 1000
Millimeters (mm): 0.011
Microns (µm): 11
inch: 0.000433

Near-limit woven cloth — cite ISO 9044-style inspections where mandated; handbook values conflict

Approximate sieve opening — not a formula

Mesh counts describe weave density; micron columns summarize nominal aperture sizes taken from ASTM-like charts. Wire diameter tolerances, corrosion, ISO vs ASTM wording, and microscope calibration all influence measured openings.

Nearby mesh comparison

Mesh	µm	mm	Link
1000	11	0.011	Mesh detail page
800	13	0.013	Mesh detail page

Try the live calculators

Jump into the interactive tools when you need arbitrary mesh counts, micron targets, or quick copy/paste summaries for RFQs.

Mesh ↔ micron converter Micron → mesh converter Downloadable chart Sieve standards primer

How industrial teams interpret this row

Treat handbook micron openings as communication shorthand — procurement still requires supplier certs; QA needs retained-mass logs tied to calibrated stacks.

Typical applications

Teams deploy these meshes across powder coatings, pharmaceutical milling, hydraulic filtration, abrasive blasting, and precision polishing workflows.