When sieve sizes have openings smaller than 1/4 inch, how are they identified?

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Multiple Choice

When sieve sizes have openings smaller than 1/4 inch, how are they identified?

Small openings in sieves are identified by the number of openings per inch, a mesh designation. This system is used when openings are finer than about 1/4 inch because listing an exact inch-sized opening becomes impractical; instead, the sieve is labeled by how many holes exist in one inch of screen. A higher mesh number means a finer opening. This labeling (the mesh count) is standardized and widely used in sieve analysis, making it easy to match a sieve to the expected particle size range. The thickness of the wire (gauge) is about the screen material, not the opening size; the total size of the stack doesn’t identify the individual sieve, and describing openings in inches works for larger sizes but not for these finer openings.

Small openings in sieves are identified by the number of openings per inch, a mesh designation. This system is used when openings are finer than about 1/4 inch because listing an exact inch-sized opening becomes impractical; instead, the sieve is labeled by how many holes exist in one inch of screen. A higher mesh number means a finer opening. This labeling (the mesh count) is standardized and widely used in sieve analysis, making it easy to match a sieve to the expected particle size range. The thickness of the wire (gauge) is about the screen material, not the opening size; the total size of the stack doesn’t identify the individual sieve, and describing openings in inches works for larger sizes but not for these finer openings.

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