low-priced coffee test sieve

Wednesday May-21 2025  17:25:11

What is a low-priced coffee test sieve?

Low-priced coffee test sievess are professional equipment used to detect the quality and uniformity of coffee particles. The coarseness of coffee particles directly affects the extraction efficiency and flavor, so the design of test sieve parameters is extremely critical. The sieveing mesh of common low-priced coffee test sieves ranges from 20 to 100 meshes, of which the 20-mesh sieve has a pore size of about 0.85mm, which is suitable for coarse ground coffee powder sieveing; the 60-mesh sieve has a pore size of about 0.25mm, which can detect medium ground powder; the 100-mesh sieve has a pore size of about 0.15mm, which is used for fine ground powder detection.

The test sieve usually uses a combination of 3-5 layers of sieves, with the mesh size increasing from top to bottom. The top layer is a coarse sieve, the bottom layer is a fine sieve, and the middle layer accurately divides the particle interval. The sieve material is mostly stainless steel or nylon. The former is durable and corrosion-resistant, and the latter is tough and not easy to clog. During the test, the coffee powder is placed on the top sieve. Through mechanical vibration or manual shaking, particles of different sizes fall into the corresponding layer sieves, which can be used to determine whether the coffee powder meets the particle requirements of a specific brewing method and ensure the stable output of coffee flavor.

The difference between low-priced coffee test sieves and rotary vibrating sieves

Comparison items	Low-cost coffee test sieves	Rotary vibrating sieves (rotary vibrating sieves)
Structure	Generally, it is a test sieve structure, with a replaceable sieve frame on the top and fewer layers	Multi-layer stackable design (1-5 layers)
Drive mode	Electromagnetic or mechanical vibration, some with ultrasonic vibration system	Vertical vibration motor drive, excitation force adjustable in multiple directions
Screen diameter	Common small-diameter test sieves such as 200mm and 300mm	Common industrial production diameters such as 400mm~1500mm
Applicable Scenarios	Laboratory analysis, small batch grading, quality inspection	Industrial production sieveing, large batch continuous operation
Screening accuracy	High precision, especially ultrasonic test sieve, suitable for micro powder sieveing	Medium to high precision, suitable for particles or powders of different particle sizes
Processing capacity	Very small, suitable for analysis of samples of tens of grams to several kilograms	Medium to large, can process tens of kilograms to several tons/hour
Applicable material types	coffee powder, instant coffee, ground particle samples	coffee bean fragments, coffee powder, auxiliary powder, etc.

How to choose a low-priced coffee test sieve?

When choosing a low-priced coffee test sieve, you can analyze it from two perspectives: equipment type (such as ultrasonic test sieve and test sieve) and mesh type (round hole or square hole), so as to determine its applicable material type and usage scenario. The following is an objective analysis based on these two aspects to help clarify the applicable material characteristics of the test sieve under different structures, especially for the sieveing scenarios of granular coffee raw materials or similar granular materials.

1. Analysis from the equipment type: Ultrasonic test sieve vs. ordinary test sieve

Ultrasonic test sieve

Applicable to fine particles and materials that are easy to agglomerate: such as instant coffee powder, ground fine coffee particles, and coffee powder with electrostatic adsorption after drying. It is used in occasions of fine classification, such as quality inspection of coffee particles under different particle size distributions, and laboratory environments with high sieveing accuracy requirements.

Features: Suitable for sieveing fine particles with a particle size below 300 mesh; conducive to processing sticky or hygroscopic particles.

Ordinary test sieve

Applicable to medium-sized particles: such as ground coffee particles, roasted coffee bean fragments, etc.; dry materials that are not easy to block the net: low moisture content, non-sticky particles; such as quickly sieveing the degree of crushing of coffee beans or sieveing out large particle impurities.

Features: Suitable for sieveing needs with particle diameters greater than 100μm;

2. Analysis from the mesh hole type: round hole vs square hole mesh

①Round hole mesh: the hole type is smooth, and the overall rigidity of the mesh is good; commonly used in metal perforated sieve plates, and the edges of the mesh holes have no sharp angles.

Applicable materials: regular particles or round coffee particles, such as coffee particles with high grinding uniformity; the particle size distribution is concentrated, and the round hole sieve has a higher sieveing efficiency for materials with small particle size fluctuations; sieveing of larger particles, such as removing oversized particles or foreign matter from roasted and crushed coffee particles.

Features: not easy to get stuck, and the sieveing process causes less damage to the material.

② Square hole sieve: the sieve has a high opening rate and a large number of sieve holes per unit area, which is suitable for graded sieveing.

Applicable materials: irregularly shaped granular materials: such as irregular coffee grinding particles and coarse crushed mixtures; sieveing operations that require a higher opening rate: improve sieveing efficiency; large-scale sieveing and scenes with high pass rate requirements.

Advantages: high sieveing efficiency, large processing volume per unit time; can achieve more accurate multi-level particle size classification.

Comparison of applicable scenarios of low-priced coffee test sieves with different structures and hole types

Comparison dimensionsultrasonic test sieveordinary test sieve ound hole sievesquare hole sieve

Applicable particle size<300μm (micro powder)>100μm (granules)coffee granules with uniform and regular particle sizeirregular or mixed particles

Easy to block ot easy to blockeasy to blockless difficult to blockeasy to block, need to be cleaned regularly

Applicable materialsinstant coffee powder, coffee micro powder oasted coffee granules, coarsely ground powdermedium particle size granules, regular coffee granulesroken coffee beans, ground coffee of different shapes

Processing efficiencyccuracy first, low processing volumemoderate processing volumemoderate sieveing efficiencyhigh sieveing efficiency

Dimensions of low-priced coffee test sieve

Screen mesh number	sieve aperture (mm)	sieve diameter (mm)	Applicable materials
8 mesh	2.36	300	whole coffee beans
12 mesh	1.70	300	larger coffee particles
16 mesh	1.18	300	medium coffee particles
20 mesh	0.85	300	finer coffee particles
30 mesh	0.50	300	fine coffee powder
40 mesh	0.40	300	ultrafine coffee powder

Low-priced coffee test sievess are usually made of food-grade materials such as stainless steel, and the diameter is usually 200mm. By stacking sieves of different meshes and placing them on a vibrating sieve or shaking them manually, the coffee powder will pass through the corresponding sieve according to the particle size. When choosing a low-priced coffee test sieve, if you need more detailed purchasing advice or specific model recommendations, please provide more details (such as budget range, sieveing) so that we can further optimize!