Mechanical Sieves
Mesh device used to strain solids from liquids and manually separate particles by size; sieves can be constructed of metal or plastic. Products include sets, macro and micro sieve sizes, sifters and beads, etc.
What Is a Sieve?
Sieves are mesh strainers. They are typically round, with solid metal walls connected to a woven metal screen. They are often used with sieve receivers that collect the material that falls through the sieve. To prevent loss and contamination of the material, it can be protected by a sieve cover. Sieve covers are also necessary for covering the top sieve when multiple sieves are stacked on a laboratory shaker.
What Is Sieving?
Sieving is a technique for separating a sample into particles of different sizes. Sieving can be used to separate stones from sand and is used in the food industry to help eliminate contamination by foreign bodies.
Analysis by sieving may require a single sieve or a set of mesh sieves, arranged by decreasing size of the mesh openings. Air flow, liquid, vibration, or another mechanical method is used to move the sample particles through the screens.
Critical variables include sample size, agitation parameters, duration, and end point determination. Sample properties, like hygroscopic or electrostatic tendencies, can present analytical challenges, and some samples may need to be suspended in a liquid for accurate measurement.
Types of Sieves
Sieve frames and meshes may be stainless steel or brass. Common diameters are 3, 8, and 12 in. and 200 and 300mm; non-standard sieves may have other diameters, including 6, 10, and 18 in. Heights range from 1 to 9 in. and may be designated as full, intermediate, or half-height.
ASTM E-11 establishes criteria and tolerances for the openings in the woven wire mesh for standard sieve sizes. Some sieves are also traceable to NIST or must meet ISO 3310-1.
DUAL MANUFACTURING COMPANY INC 8IN DI X 2 DEEP SS NO 50 SIEVE
NC3450385 8IN DI X 2 DEEP SS NO 50 SIEVE
Chemglass Life Sciences Cell Screen, 150 Mesh, SST
Cell Screen, 150 Mesh, Stainless Steel . Component of the CLS-5020 Stainless Steel tissue grinder cel dissociation sieves. Pictured are the complete tissue grinders, but this item is cell screen only. 150 mesh is equivalent to 105 micron and 0.0041 inches.
MSC Vermont Gage Plug Gage, 0.3310 in Diameter, 2.0000 in Overall Length, Tool Steel, Class ZZ Plus
This plug gage is designed for precise measurement and inspection applications. Made from durable tool steel, it features a Class ZZ Plus accuracy for reliable performance.
- Diameter of 0.3310 in.
- Overall length of 2.0000 in.
- Class ZZ Plus accuracy.
- Constructed from tool steel.
- Tolerance of 0.000200 in.
- 10 Micro coating/finish.
- Suitable for go inspection, setting micrometers, verniers, and other measuring devices.
- Includes a certificate of accuracy with NIST traceability.
- Manufactured to ASME B89.1 standards.
- Made in the United States.
Cole-Parmer 3"-Diameter Sieve, Full Height Stainless Steel, No. 70 (212)
For use with Cole-Parmer sieve shaker (59986-01), sold separately. Order optional stainless steel cover (59988-03) and full-height receiving pan (59988-07), sold separately.
Gilson Company Inc 3in (76mm) diameter ASTM E11 Test Sieve, No. 35
3in (76mm) diameter ASTM E11 Test Sieve has stainless steel woven-wire cloth with No. 35 (500µm) openings and full height stainless steel frame. Overall height is 1-3/4in and stacked height is 1-1/8in. Features: Individually serial numbered, Compliant with ASTM E11 requirements for Compliance Sieves. Included Items: 3” Sieve, All Stainless, Full Height, No. 35, Certificate of Conformance to ASTM E11 requirements.