Description
Precision is not a feature. It is a covenant between the instrument and the truth.
Before a pharmaceutical tablet reaches a patient, before a batch of cement is poured into a foundation, before a gram of flour becomes a Michelin-starred pastry — particles pass through mesh. The Granulometer is the gatekeeper of that passage. Its 304 stainless steel mesh, stretched across a 20cm double-layer iron-chromium frame, sorts particles with the indifferent exactitude of a scientific instrument that does not care about your deadline — only about accuracy.
Available in mesh sizes from 12 (coarse) to 200 (ultra-fine), this sieve serves industries that cannot afford ambiguity: mining assay labs, pharmaceutical QA departments, ceramic pigment manufacturers, food processing QC stations. The stamping-molded frame eliminates the weld-point failures of cheaper spun-rim designs, and the double-layer construction provides the rigidity required for mechanical shaker compatibility.
Between the mesh and the material lies the difference between a guess and a measurement.
Key Features
- ✦ 304 Stainless Steel Mesh: Food-grade, corrosion-resistant, maintains aperture integrity across thousands of cycles
- ✦ Double-Layer Stamping Frame: Press-formed iron-chromium construction — no welds, no seam failures under vibration
- ✦ 12–200 Mesh Range: From coarse aggregate sorting to sub-100-micron powder classification
- ✦ 20cm Standard Diameter: Compatible with all major mechanical sieve shakers and stack systems
- ✦ 5cm Frame Height: Sufficient sample capacity for batch testing without overflow
- ✦ Stackable Design: Nests seamlessly with standard 20cm sieves for multi-fraction analysis in a single run
Technical Specifications
- Mesh Material: 304 Stainless Steel
- Frame Material: Double-Layer Iron-Chromium Plated (Stamping Molding)
- Diameter: 20 cm (Standard Laboratory Size)
- Frame Height: 5 cm
- Available Meshes: 12, 20, 40, 60, 80, 100, 120, 140, 160, 180, 200
- Classification: Laboratory Beaker / Sieve
- Origin: Mainland China (Industrial-Grade Manufacturing)
- Note: Frame is not acid/alkali resistant. Do not immerse in liquid or wash with water. Dry-clean only.
Application Scenarios
The Granulometer serves wherever particle size distribution is a quality parameter — which is to say, nearly everywhere. In pharmaceutical labs, it validates that active ingredient powders fall within specified micron ranges before tablet compression. In mining and geology, it classifies ore samples for assay preparation. In food science, it confirms flour granularity for bakeries and particle consistency for spice blends. Construction materials labs use it for aggregate grading; ceramic studios use it for glaze pigment refinement; environmental labs use it for soil analysis. It is the universal first step in any workflow that begins with the question: "How fine is this?"
Frequently Asked Questions
Q: Why can't the frame be washed with water?
A: The frame is iron-chromium plated, not stainless steel. Water exposure will cause rust formation. Clean the mesh with a dry brush or compressed air. For the frame exterior, use a dry cloth only.
Q: Is this sieve compatible with mechanical shakers?
A: Yes. The 20cm diameter conforms to the ISO 3310-1 standard for laboratory test sieves, making it compatible with all major shaker brands including Retsch, Endecotts, and Haver.
Q: What is the actual aperture size for each mesh number?
A: Mesh 12 = 1.70mm, Mesh 40 = 0.425mm, Mesh 100 = 0.150mm, Mesh 200 = 0.075mm. Full aperture tables are available per ASTM E11 and ISO 565 standards.
Q: Can these be stacked for multi-fraction sieving?
A: Absolutely. The double-layer frame design provides the flat seating surface required for stable stacking. Arrange sieves from coarsest (top) to finest (bottom) for a complete particle size distribution in a single shaker run.
Q: Is the 304 stainless steel mesh food-safe?
A: Yes. 304-grade stainless is food-contact safe and widely used in commercial kitchens and food processing facilities. It resists corrosion from organic acids and maintains aperture accuracy over repeated use.
Q: How long will the mesh maintain its aperture accuracy?
A: Under normal laboratory use with dry, non-abrasive powders, the 304 stainless steel mesh maintains aperture tolerance for 2,000+ cycles. Degradation factors include abrasive materials like sand or ceramic grit, aggressive cleaning with wire brushes or acid washes, and mechanical impact from dropping or improper stacking. For ISO-certified labs, annual calibration verification is recommended regardless of apparent condition — sieve mesh stretches microscopically with every use, and cumulative deformation eventually exceeds tolerance even when the sieve looks perfect to the naked eye.
Q: What is the manufacturing tolerance for mesh apertures?
A: These sieves are manufactured to ISO 3310-1 specifications. The nominal aperture tolerance for woven wire mesh in the 100-200 range is approximately plus or minus 5 to 7 percent of the nominal opening size. For a 200 mesh sieve with 75 micron nominal apertures, this translates to a range of approximately 71 to 79 microns across the mesh surface — tighter than most general-purpose industrial sieves and entirely adequate for QC applications where the alternative is a sieve costing three to five times more.
Q: What industries commonly use the 200 mesh specification?
A: The 200 mesh (75 micron) sieve is the laboratory workhorse of powder characterization. Pharmaceutical labs use it for API particle size distribution testing. Food scientists run flour and sugar refinement through 200 mesh for quality grading. Cosmetic chemists validate pigment dispersion uniformity. Ceramic engineers check glaze particle distribution. Geotechnical labs classify soils per ASTM D422. If a laboratory owns only one sieve, it is almost always a 200 mesh — it sits at the boundary between "fine powder" and "ultra-fine powder," making it the single most diagnostically useful aperture in the stack.
Q: How should I store multiple sieves to prevent mesh damage?
A: Stack sieves with mesh surfaces facing upward and place a protective cover — cardboard, plastic lid, or dedicated sieve pan — on the topmost unit. Never stack with mesh surfaces contacting each other, as even minor abrasion between adjacent meshes will distort aperture shapes and compromise measurement accuracy. For long-term storage, vertical rack storage is ideal; if nesting is necessary, use spacer rings between each sieve. A single drop from bench height onto a hard floor can permanently deform a 200-mesh screen beyond recovery.
Customer Reviews
Оплата и безопасность
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.