Laboratory Sieve

What Is Laboratory Sieve?

Laboratory sieve is mainly used in the laboratory to classify and measure powders, bulk particles and suspensions. Different sizes of samples are separated through sieves of different sizes. It can quickly and effectively measure the size of solid particles from 125 mm to 20 microns. Special sieves with pores smaller than 20 μm can be used, but it should be understood that the finer the sieve, the more likely certain types of solid particles will clog or clog the pores. However, "micro" sieving down to 5 μm is possible using special techniques. Laboratory sieve can stack 8 layers of sieve frame (including sieve bottom), which can precisely separate a kind of granular material into 2-7 particle segments at the same time.

Laboratory sieve diameters include 75mm, 100mm, 200mm, 300mm, and the mesh size is from 4mm to 38 microns. When stacked on the sieve shaker, the top test sieve has the largest mesh number and the bottom test sieve has the smallest mesh number.

What Are The Different Types of Laboratory Sieves?

Laboratory sieves are commonly used equipment in laboratories for grading, screening and analyzing solid particles. According to the different materials of the sieves, laboratory sieves can be divided into the following three types:

Woven wire mesh laboratory sieve: The material is selected from high-quality stainless steel, brass, tin bronze, nickel, molybdenum, etc. The cost is low, the toughness is good, but the relative accuracy is low, and the mesh may be deformed. The accuracy of the mesh can be controlled by expanding and reducing the mesh. The basic size of the mesh is 2.36mm-0.038mm, which conforms to international standards. The screen material is brass, tin bronze, and stainless steel. 2.36um-100um adopts nickel plating processing, which can not only improve the accuracy of the mesh, but also prevent the deformation of the mesh, which is strong, wear-resistant and durable.

Metal perforated plate laboratory sieve: The punching precision is uniform and not easy to deform. It is mainly used for the detection of large particles. There are two types of round holes and square holes. They are mostly used for round hole slag powder collection screens, round hole sandstone screens, etc.

Electroforming laboratory sieve: It is manufactured by electrochemical method, with the highest precision, mesh size range: 500-5um, mesh size absolute tolerance 2-3um, suitable for scientific research institutions, and diamond is widely used.

Technical Parameter of Laboratory Sieve

No.	name	unit	parameter
01	frame	the number of layer	1-8
02	frame diameter	mm	&200
03	sieve size	mm	0.025-3
04	noise	dB	less than 50
05	amplitude	mm	2-500
06	vibration frequency	times/min	1440
07	outside dimension	LWH	350*350*(300+n*5)
08	power supply	V;HZ	200;50
09	machine weight	kg	2-500
10	vibration motor	power	o.12kw

How Does Laboratory Sieve Works?

Laboratory sieve works by separating particles based on their size. The sample to be analyzed is placed on top of a laboratory sieve, a device with a sieve with holes of a specific size. The sample is then spread evenly on the surface of the screen.

The laboratory sieve is then placed on a mechanical shaker for stirring the sample. The vibrating screen can be set to vibrate at a specific frequency and amplitude to ensure an even distribution of particles across the screen.

As the sample is shaken, smaller particles pass through the holes in the sieve and collect on a tray or container below the sieve. Larger particles remain on top of the screen and cannot pass through the holes.

After shaking is complete, measure and record the amount of material that passes through each sieve. This information is used to calculate the particle size distribution of the sample.

What are laboratory sieves used for?

Laboratory sieve is used for particle size analysis, classification and material separation in various industries. They are commonly used in quality control, R&D, and production environments. The following are some specific applications of laboratory sieve:

1. Particle size analysis: used to determine the particle size distribution of the material. This is important for understanding how materials behave in various applications, such as in pharmaceutical formulation, food processing and construction materials.

2. Quality Control: Practical for quality control to ensure that materials meet specific size and quality specifications. This is important to ensure that the final product will perform as expected in its intended application.

3. Separation of materials: Different types of materials can be separated according to the size of the materials. This is important to ensure that the material is of consistent quality and performs as expected in its intended application.

4. Soil analysis: Commonly used in soil analysis to determine the particle size distribution of soil samples. This information is important for understanding soil properties and selecting soil amendments suitable for agricultural applications.

5. Powder Processing: Used in powder processing applications to ensure powders are of consistent size and quality. This is important to ensure that the final product will perform as expected in its intended application.