Assay Equipment Accessories & Consumables
High Purity Natural Agate Mortar and Pestle Set for Laboratory Grinding and Mixing
Item Number : KT-NYB
Price varies based on specs and customizations
- Mohs Hardness
- 7.2 - 7.5
- Silicon Dioxide (SiO₂) Purity
- 97.26 wt%
- Outer Diameter Range
- 40 mm - 270 mm (24 sizes)
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Product Overview


This natural agate mortar and pestle set is precision-crafted from select geological chalcedony stone to deliver contamination-free comminution, fine grinding, and homogenous powder blending across scientific laboratory workflows. Formed from high-purity mineral stock with an exceptionally high silicon dioxide concentration, the grinding vessel provides an inert, non-porous contact face that prevents cross-contamination and elemental leaching during sensitive analytical sample preparation.
Engineered for versatile wet and dry grinding, this equipment is widely utilized across geochemical assays, pharmaceutical compounding, crystallography, advanced ceramics research, and battery material synthesis. It provides the mechanical consistency required to reduce crystalline solids, mineral specimens, biological tissues, and synthetic compounds into uniform fine powders optimized for X-ray fluorescence, X-ray diffraction, and chromatographic spectroscopy.
Built to withstand rigorous laboratory environments, the unit exhibits outstanding structural integrity, extreme wear resistance, and long-term chemical durability against acidic grinding matrices. With no structural fissures, surface voids, or abrasive-shedding inclusions, the equipment guarantees analytical reproducibility, safeguarding trace-level data integrity across demanding industrial quality control and academic research protocols.
Key Features
- High-Purity Natural Chalcedony Construction: Sourced exclusively from premium natural agate containing 97.26% silicon dioxide with minimal trace metal oxides, preventing matrix shedding and elemental contamination during trace-level spectroscopy and elemental analysis.
- Exceptional Mohs Hardness and Abrasion Resistance: Rated between 7.2 and 7.5 on the Mohs hardness scale with an elastic modulus exceeding 70 GPa, this grinding vessel maintains superior dimensional resilience and resists surface scoring even when grinding hard crystalline solids.
- Defect-Free Polished Working Surface: Carefully inspected and polished to achieve an ultra-smooth, high-gloss finish entirely free of cracks, structural fractures, and macroscopic impurities, preventing analyte retention and ensuring effortless residue cleanup between runs.
- Superior Acid and Chemical Resistance: Demonstrates comprehensive chemical inertness against acidic grinding slurries, corrosive solvents, and aggressive analytical reagents, eliminating vessel degradation and reagent contamination during wet comminution.
- Ergonomic Pestle Geometry and Dynamic Shear: Machined with an ergonomically contoured handle and a broad spherical grinding head that aligns smoothly against the internal curvature of the bowl, maximizing shearing contact area while minimizing operator physical fatigue during prolonged manual trituration.
- Stable High-Density Base Architecture: Engineered with a solid physical profile featuring a specific gravity of 2.65 kg/dm³ and a bulk density of 1.5 kg/L, keeping the mortar steady on non-slip laboratory benches to prevent accidental displacement and material spillage.
- Comprehensive Size Portfolio: Manufactured in 24 standardized outer diameter configurations spanning from 40 mm to 270 mm, accommodating micro-scale forensic specimen preparation, standard laboratory analytical assays, and bulk powder synthesis.
- Broad Multimodal Sample Compatibility: Supports dry pulverization, solvent-assisted slurry dispersion, and delicate solid-state mixing, providing uniform particle size reduction for pharmaceuticals, pigments, geological cores, and advanced ceramic matrices.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Geochemical & Mineralogical Assay | Comminution of geological rock specimens, ores, silicates, and soil samples into ultra-fine powders for X-ray fluorescence (XRF) and ICP-MS. | Prevents metallic tool abrasion, eliminating iron, tungsten, and cobalt contamination to preserve baseline elemental accuracy. |
| Pharmaceutical Synthesis & Compounding | Micronization and homogenous blending of active pharmaceutical ingredients (APIs), excipients, and crystalline organic compounds. | Non-porous chalcedony surface prevents active ingredient cross-contamination and ensures high sample recovery without batch carryover. |
| Advanced Ceramics & Electronic Materials | Wet and dry pulverization of high-purity oxide powders, nitrides, and dielectric precursors prior to hydraulic compaction and sintering. | High Mohs hardness (7.2–7.5) prevents abrasive wear debris from altering delicate stoichiometry or dielectric properties. |
| Battery Cathode & Electrolyte Synthesis | Intimate solid-state mixing of lithium/sodium cathode precursors, conductive carbon additives, and solid electrolyte ceramic powders. | Delivers uniform sub-micron particle distribution and prevents metallic impurity introduction that degrades electrochemical cycling. |
| Forensic Science & Toxicological Screening | Trituration and micro-extraction of minute chemical traces, forensic evidence, soil residues, and botanical fragments. | Smooth internal bowl geometry enables complete sample recovery from micro-scale batches with zero analyte loss into micro-fissures. |
| Catalysis & Chemical Synthesis Research | Mechanical activation and blending of heterogeneous catalysts, metal-organic frameworks (MOFs), and reagent complexes in acidic media. | Superior acid resistance permits mechanical grinding in the presence of acidic activators without chemical degradation of the vessel wall. |
| Pigment, Dye & Fine Chemical Processing | Dispersion and fine grinding of inorganic pigments, optical coating powders, and high-purity mineral colorants. | High-gloss polished finish prevents pigment staining, facilitating rapid solvent decontamination between different color formulations. |
Technical Specifications
Material & Physical Properties
| Parameter | Specification / Value |
|---|---|
| Material Composition | Natural Chalcedony Agate |
| Silicon Dioxide ($SiO_2$) Content | 97.26 wt% |
| Minor Oxide Content ($MgO / CaO / Mn_2O_3$) | 2.74 wt% |
| Specific Gravity (比重) | 2.65 kg/dm³ |
| Bulk Density (散重) | 1.5 kg/L |
| Mohs Hardness (莫氏硬度) | 7.2 - 7.5 |
| Elastic Modulus (弹性模量) | > 70 GPa |
| Surface Appearance & Color | Milky white or gray, high-gloss polish |
| Structural Integrity | Crack-free, inclusion-free, high wear resistance |
| Chemical Durability | Fully resistant to acidic media and organic solvents |
Dimensional Portfolio (KT-NYB Series)
| Model Number | Outer Diameter ($\Phi$ mm) | Recommended Working Volume (Max 1/3 Capacity) | Primary Laboratory Scope |
|---|---|---|---|
| KT-NYB-040 | $\Phi$40 | ~3 – 5 mL | Micro-scale forensic & precious trace analysis |
| KT-NYB-050 | $\Phi$50 | ~6 – 10 mL | Analytical micro-chemistry & spectroscopic assays |
| KT-NYB-060 | $\Phi$60 | ~12 – 18 mL | Academic research & fine analytical testing |
| KT-NYB-070 | $\Phi$70 | ~20 – 28 mL | Standard laboratory sample preparation |
| KT-NYB-080 | $\Phi$80 | ~30 – 45 mL | Pharmaceutical pre-formulation & mineralogy |
| KT-NYB-090 | $\Phi$90 | ~50 – 70 mL | Geochemical crushing & powder blending |
| KT-NYB-100 | $\Phi$100 | ~75 – 100 mL | Routine laboratory milling & chemical synthesis |
| KT-NYB-110 | $\Phi$110 | ~110 – 140 mL | Catalyst preparation & ceramic powders |
| KT-NYB-120 | $\Phi$120 | ~150 – 190 mL | Battery material mixing & solid-state synthesis |
| KT-NYB-130 | $\Phi$130 | ~200 – 250 mL | Intermediate batch processing & wet grinding |
| KT-NYB-140 | $\Phi$140 | ~260 – 320 mL | Industrial QA/QC sample preparation |
| KT-NYB-150 | $\Phi$150 | ~330 – 400 mL | Bulk ceramic precursor comminution |
| KT-NYB-160 | $\Phi$160 | ~420 – 500 mL | Mineral processing & high-volume assays |
| KT-NYB-170 | $\Phi$170 | ~520 – 620 mL | Advanced materials batch trituration |
| KT-NYB-180 | $\Phi$180 | ~650 – 760 mL | Pilot laboratory powder processing |
| KT-NYB-190 | $\Phi$190 | ~780 – 900 mL | High-throughput industrial sample testing |
| KT-NYB-200 | $\Phi$200 | ~950 – 1100 mL | Heavy-duty manual comminution |
| KT-NYB-210 | $\Phi$210 | ~1150 – 1300 mL | Large-scale chemical compounding |
| KT-NYB-220 | $\Phi$220 | ~1350 – 1550 mL | Bulk geochemical & soil sample processing |
| KT-NYB-230 | $\Phi$230 | ~1600 – 1800 mL | Pilot-scale active ingredient blending |
| KT-NYB-240 | $\Phi$240 | ~1850 – 2100 mL | Ceramic slurry & pigment milling |
| KT-NYB-250 | $\Phi$250 | ~2150 – 2450 mL | Industrial production support testing |
| KT-NYB-260 | $\Phi$260 | ~2500 – 2850 mL | Heavy bulk specimen preparation |
| KT-NYB-270 | $\Phi$270 | ~2900 – 3300 mL | Maximum-capacity manual laboratory processing |
Operational Guidelines and Protocols
| Operating Parameter | Protocol Requirement | Engineering Rationale |
|---|---|---|
| Hardness Threshold | Do not grind solids exceeding 7.5 Mohs | Prevents mechanical abrasion and surface scoring of the chalcedony matrix. |
| Crushing Technique | Crush large chunks via downward vertical pressure only; no pounding or hammering | Impact strikes cause structural micro-fractures, pestle chipping, and hazardous sample splashing. |
| Volatile / Explosive Solids | Apply light downward pressure only; do not grind | Friction-induced shear stress can trigger unstable energetic reactions or volatile decomposition. |
| Corrosive Material Handling | Cover mortar with heavy paper or plastic sheet; insert pestle through a center aperture | Shields the technician from caustic splashes and acidic vapor generation during active comminution. |
| Sample Volumetric Limit | Maximum filling volume must not exceed 1/3 of total bowl volume | Maintains optimal mechanical shearing trajectories and prevents material overflow during manual grinding. |
| Thermal Restriction | Do not heat; strictly prohibited from drying inside electric ovens or furnaces | Rapid thermal expansion creates catastrophic thermal shock fractures throughout natural stone. |
| Standard Cleaning | Rinse thoroughly with clean water; dilute hydrochloric acid (HCl) safe for acid-soluble residues | Dilute acid dissolves complex mineral stains without compromising the 97.26% silica vessel walls. |
| Tenacious Stain Removal | Grind a small quantity of pure sodium chloride (NaCl) inside the bowl, then wash with water | Pure salt provides gentle, non-contaminating mechanical scrubbing to release embedded residues. |
Why Choose This Product
- Natural Monolithic Craftsmanship: Each set is sculptured directly from natural chalcedony stone rather than pressed composite powders or bonded aggregates, ensuring structural uniformity, zero resin binder contamination, and complete chemical purity across long operating lifecycles.
- Strict Analytical Contamination Control: With a 97.26% silicon dioxide matrix and defect-free, non-porous polished surfaces, this grinding vessel prevents trace metal shedding, sample carryover, and matrix cross-contamination in ultra-sensitive spectroscopy.
- Rigid Wear Integrity and Longevity: Operating at an elevated Mohs hardness of 7.2–7.5 and an elastic modulus exceeding 70 GPa, the equipment provides unmatched resistance to abrasive scoring, sustaining precise contact geometry over decades of continuous laboratory use.
- Unrivaled Dimensional Range: Offering 24 calibrated diameter sizes from 40 mm to 270 mm, this product line seamlessly equips research benches from single-crystal micro-investigations up to multi-liter pilot-scale powder homogenization.
- Committed Technical Support and Quality Assurance: Every unit undergoes rigorous optical and mechanical defect inspections to guarantee crack-free delivery, supported by KINTEK's responsive technical specialists for customized sample preparation consultation.
Contact our technical sales team today to request a quote or discuss tailored sizing configurations for your laboratory sample preparation requirements.
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Product Datasheet
High Purity Natural Agate Mortar and Pestle Set for Laboratory Grinding and Mixing
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