Laboratory Metal Sieves

Laboratory Metal Sieves for testing and sizing are made from first class stainless steel woven wire cloth, brass mesh, bronze wire cloth or precisely punched perforated plate mesh. The sieves diameter varies from 12.5cm to 40cm. We also do customizable design.

Metal Sieves for Sizing and Screening

 

Bohes metal lab sieves offer the following benefits:

Long Screen Life:

The screen cloth is held in the frame very tightly by a special process. This design enables clean screening, less screen wear and longer screen life.

No Clogging of Screen:

As the screen vibrates in multiplane hence the holes of the screen remain clear. Additional and blinding system is provided for difficult to screen and wet materials.

Compact Design:

This screen occupies less than half the spaces as occupied by any other screen of same capacity. Useful in wet screening The screen works on solid-liquid separation efficiently.

Minumum blinding of screens:

Due to vibrations in the vertical plane, blinding of screen is minimized. However, for certain materials which have inherent blinding, sticking property and special accessories can be used to eliminate this problem.

Vibration free operation: 

There are no vibrations at the screen base. Even no flooring is needed. You can mount it on Bins, upper floors, planks or wherever it is most suited.

Low on power and maintainence / High on efficiency: 

The design enables to utilize the vibratory force generated by the motor to the optimum and very few moving parts reduce the maintenance to minimum.

Metal test sieve(in ss materials) specification
Sieve Material		Stainless Steel 304/316/316L,etc.
Technology		Woven
Standard		ASTM E11-09      ISO3310-1
Sieve Diameter		3" 6" 8" 10" 12" 200mm 300mm
Frame	Material	SS brass , etc.
	Height (full)	1-3/4'' -- 2-5/8''
Aperture shape		Square
Mesh opening / Aperture		5--500mesh

 

Standard Metal Testing Sieves ASTM Specification E-11
Nominal Dimensions, Permissible Variations for Wire Cloth of Metal Standard Test Sieves Series
Sieve Designation		Norminal Sieve Opening inch (c)	Permissible Variation of Average Opening from the Standard Sieve Designation	Opening Dimension Exceeded by not more than 5% of the openings	Maximum Individual Opening	Nominal Diameter mm (a)
Standard(b)	Alternative
125mm	5"	5	±3.70mm	130.0mm	130.9mm	8
106mm	4.24"	4.24	±3.20mm	110.2mm	111.1mm	6.3
100mm (d)	4"	4	±3.00mm	104.0mm	104.8mm	6.3
90mm	3.5"	3.5	±2.70mm	93.6mm	94.4mm	6.3
75mm	3"	3	±2.20mm	78.1mm	78.7mm	6.3
63mm	2.5"	2.5	±1.90mm	65.6mm	66.2mm	5.6
53mm	2.5"	2.12	±1.60mm	55.2mm	55.7mm	5
50mm (d)	2"	2	±1.50mm	52.1mm	52.6mm	5
45mm	1.75"	1.75	±1.40mm	46.9mm	47.4mm	4.5
37.5mm	1.5"	1.5	±1.10mm	39.1mm	39.5mm	4.5
31.5mm	1.25"	1.25	±1.00mm	32.9mm	33.2mm	4
26.5mm	1.06"	1.06	±0.800mm	27.7mm	28.0mm	3.55
25.0mm	1.00"	1	±0.800mm	26.1mm	26.4mm	3.55
22.4mm	0.875"	0.875	±0.700mm	23.4mm	23.7mm	3.55
19.0mm	0.75"	0.75	±0.600mm	19.9mm	20.1mm	3.15
16.0mm	0.625"	0.625	±0.500mm	16.7mm	17.0mm	3.15
13.2mm	0.530"	0.53	±0.410mm	13.83mm	14.05mm	2.8
12.5mm (d)	0.5"	0.5	±0.390mm	13.10mm	13.31mm	2.5
11.2mm	7.0625"	0.438	±0.350mm	11.75mm	11.94mm	2.5
9.5mm	0.375"	0.375	±0.300mm	9.97mm	10.16mm	2.24
8.0mm	0.3125"	0.312	±0.250mm	8.41mm	8.58mm	2
6.7mm	0.265"	0.265	±0.210mm	7.05mm	7.20mm	1.8
6.3mm (d)	0.25"	0.25	±0.200mm	6.64mm	6.78mm	1.8
5.6mm	No. 3.5 (e)	0.223	±0.180mm	5.90mm	6.04mm	1.6
4.75mm	No. 4	0.187	±0.150mm	5.02mm	5.146mm	1.6
4.0mm	No. 5	0.157	±0.130mm	4.23mm	4.35mm	1.4
3.35mm	No. 6	0.132	±0.110mm	3.55mm	3.66mm	1.25
2.8mm	No. 7	0.11	±0.095mm	2.975mm	3.070mm	1.12
2.36mm	No. 8	0.0937	±0.080mm	2.515mm	2.600mm	1
2.0mm	No. 10	0.0787	±0.070mm	2.135mm	2.215mm	0.9
1.7mm	No. 12	0.0661	±0.060mm	1.820mm	1.890mm	0.8
1.4mm	No. 14	0.0555	±0.050mm	1.505mm	1.565mm	0.71
1.18mm	No. 16	0.0469	±0.045mm	1.270mm	1.330mm	0.63
1.0mm	No. 18	0.0394	±0040mm	1.083mm	1.135mm	0.56
850µm (d)	No. 20	0.0331	±35µm	925µm	970µm	0.5
710µm	No. 25	0.0278	±30µm	775µm	815µm	0.45
600µm	No. 30	0.0234	±25µm	660µm	695µm	0.4
500µm	No. 35	0.0197	±20µm	550µm	585µm	0.315
425µm	No. 40	0.0165	±19µm	471µm	502µm	0.28
355µm	No. 45	0.0139	±16µm	396µm	425µm	0.224
300µm	No. 50	0.0117	±14µm	337µm	363µm	0.2
250µm	No. 60	0.0098	±12µm	283µm	306µm	0.16
212µm	No. 70	0.0083	±10µm	242µm	263µm	0.14
180µm	No. 80	0.007	±9µm	207µm	227µm	0.125
150µm	No. 100	0.0059	±8µm	174µm	192µm	0.1
125µm	No. 120	0.0049	±7µm	147µm	163µm	0.09
106µm	No. 140	0.0041	±6µm	126µm	141µm	0.071
90µm	No. 170	0.0035	±5µm	108µm	122µm	0.063
75µm	No. 200	0.0029	±5µm	91µm	103µm	0.05
63µm	No. 230	0.0025	±4µm	77µm	89µm	0.045
53µm	No. 270	0.0021	±4µm	66µm	76µm	0.036
45µm	No. 325	0.0017	±3µm	57µm	66µm	0.032
38µm	No. 400	0.0015	±3µm	48µm	57µm	0.030
32µm	No. 450	0.0012	±3µm	42µm	50µm	0.028
25µm (d)	No. 500	0.001	±3µm	34µm	41µm	0.025
20µm (d)	No. 635	0.0008	±3µm	29µm	35µm	0.02