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.
Fritsch Milling And Sizing Inc Test Sieve 200/50 mm Mesh = 0.04 mm Iso 3310-1
test sieve 200/50 mm mesh = 0.04 mm ISO 3310-1
Chemglass Life Sciences Cell Screen, 200 Mesh, SST
Cell Screen, 200 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. 200 mesh is equivalent to 74 micron and 0.0029 inches.
Fritsch Milling And Sizing Inc Rubber Ball 20 mm Sieving Aid
1 rubber ball 20 mm dia.
Is recommended as sieving aids for dry sieving of materials with a high proportion of fine particles.
Recommended quantity per sieve: 5 pieces
Fritsch Milling And Sizing Inc Test Sieve 200/50 mm Mesh = 0.8 mm Iso 3310-1
test sieve 200/50 mm mesh = 0.8 mm ISO 3310-1
Fritsch Milling And Sizing Inc Test Sieve 400/65 mm Mesh = 0.063 mm Iso 3310-1
test sieve 400/65 mm mesh = 0.063 mm ISO 3310-1
Gilson Company Inc 8" Sieve, All Stainless, Full Height, No. 635
8in (203mm) diameter ASTM E11 Test Sieve has stainless steel woven-wire cloth with No. 635 (20µm) openings and full height stainless steel frame. The overall height is 2-5/8in and the stacked height is 2-1/8in. This sieve is optionally available fitted with #35 (500µm) stainless steel backing cloth for enhanced durability.
Cole-Parmer 3"-Diameter Sieve, Full Height Stainless Steel, No. 18 (1.00mm)
Made of stainless steel; 3" diameter, full height sieve, 1" stacking height.
Gilson Company Inc 200mm Air Jet Test Sieve, All Stainless, No. 60
200mm diameter Air Jet Test Sieve has stainless steel woven-wire cloth with No. 60 (250µm) opening size and stainless steel frame and is fitted with special sealing gasket.
Gilson Company Inc SIEVE 3 SS FH NO3-1/2
Sieve, Test; Gilson; Fine series; Stainless-steel cloth/frame; Full height; 3 in. dia.; No. 3-1/2; Sieve opening; 5.6mm
Gilson Company Inc SIEVE 3 SS FH NO12
Sieve, Test; Gilson; Fine series; Stainless-steel cloth/frame; Full height; 3 in. dia.; No. 12; Sieve opening; 1.7mm
Gilson Company Inc SIEVE ACRYLIC 3 SS NO140 -
Sieve, Test; Gilson; For GilSonic AutoSiever; Acrylic frame with stainless-steel mesh; 3 in. dia.; No. 140; Sieve opening; 106um
Gilson Company Inc SIEVE ACRYLIC 3 SS 25UM -
Sieve, Test; Gilson; For GilSonic AutoSiever; Acrylic frame with stainless-steel mesh; 3 in. dia.; No. 500; Sieve opening; 25um