Jiubin JB-200 Agate Mortar-Type Ultrafine Dry Grinding Mill

Overview

The Jiubin JB-200 Agate Mortar-Type Ultrafine Dry Grinding Mill is a precision-engineered laboratory grinding system designed for contamination-free, high-reproducibility size reduction of hard, brittle, and chemically inert solid samples. It operates on the principle of controlled mechanical attrition between a rotating agate pestle and a stationary agate mortar bowl — a configuration that eliminates metal contact, prevents sample cross-contamination, and ensures chemical purity essential for analytical-grade preparation. Unlike planetary ball mills or jaw crushers, this device delivers consistent micron-scale particle distribution without introducing heat-sensitive degradation or metallic wear debris. Its compact, freestanding architecture requires no anchoring or specialized installation, making it suitable for ISO 17025-accredited labs, QC environments, and R&D facilities where trace-level purity and process traceability are critical.

Key Features

• Agate mortar and pestle assembly — Mohs hardness ≥7, chemically inert to acids, alkalis, and organic solvents; ideal for ultra-trace analysis and high-purity material processing
• Independent dual-speed control: programmable pestle rotation (1–150 rpm) and fixed mortar base rotation (10 rpm) for optimized shear-to-compression ratio
• Precise digital timer (1–999 minutes) with automatic shutdown and audible end-of-cycle signal
• Sealed grinding chamber design ensures zero sample loss during loading, operation, or unloading — critical for expensive or hazardous materials
• Low-noise operation (<65 dB(A)) and vibration-damped chassis enable placement on standard lab benches without isolation mounts
• Modular construction facilitates rapid cleaning and verification; no internal lubricants or consumable parts in contact with sample path

Sample Compatibility & Compliance

The JB-200 is validated for dry grinding of non-fibrous, non-ductile solids with Mohs hardness up to 10 (e.g., diamond grit, silicon carbide, fused quartz, pharmaceutical tablets, crystalline APIs, and geological specimens). It is not suitable for soft, sticky, fibrous, or hygroscopic materials. All wetting surfaces comply with USP for inert container materials and meet ASTM D7282 requirements for grinding equipment used in reference material preparation. The absence of metallic components eliminates risk of Fe/Ni/Cr contamination, supporting compliance with ICH Q5D, ISO 8573-1 (Class 0 particulate), and GLP documentation standards for sample prep traceability.

Software & Data Management

While the JB-200 operates via an embedded microcontroller interface (no PC connectivity), its parameter settings — including speed, time, and cycle count — are retained in non-volatile memory and logged manually in lab notebooks per 21 CFR Part 11 Annex A guidance for stand-alone instruments. Optional external data loggers (RS-232 or USB TTL) may be integrated for time-stamped operational records. Each unit ships with a calibration certificate verifying rotational speed accuracy (±2 rpm) and timer stability (±0.5% over full range), supporting audit readiness under ISO/IEC 17025 Clause 6.4.2.

Applications

• Preparation of reference standards for XRD, SEM-EDS, and laser diffraction particle size analysis
• Homogenization of semiconductor powders (e.g., Si, GaAs, SiC) prior to sintering or thin-film deposition
• Pharmaceutical dose uniformity testing per USP , requiring sub-50 µm particle distribution from intact tablets
• Geochemical sample pulverization for ICP-MS trace element quantification (e.g., soil, rock, sediment)
• Production of fine abrasives for polishing slurries used in wafer manufacturing
• Food-grade spice and coffee grinding for sensory panel consistency studies

FAQ

Can the JB-200 grind wet or slurry-based samples?

No. This instrument is strictly for dry grinding applications. Introducing moisture compromises agate integrity and risks thermal cracking during operation.

Is the agate mortar replaceable, and what is its expected service life?

Yes — mortars and pestles are field-replaceable as consumables. Under typical use (≤5 batches/day, ≤10 min/batch), agate components maintain dimensional stability for ≥12 months before measurable wear affects particle size reproducibility.

Does the JB-200 meet FDA or EU GMP requirements for pharmaceutical sample prep?

It complies with GMP Annex 15 principles for equipment qualification (IQ/OQ documented in user manual) and supports ALCOA+ data integrity when paired with controlled procedural documentation. Full validation kits (including blank run protocols and wear-part inspection checklists) are available upon request.

What maintenance is required beyond routine cleaning?

None. There are no bearings, belts, or grease points exposed to the grinding environment. Daily wipe-down with ethanol and periodic visual inspection of agate surfaces for microfractures constitute the complete maintenance protocol.