Jiubin JB-120 Agate Mortar Grinder
| Brand | Jiubin |
|---|---|
| Origin | Shanghai, China |
| Model | JB-120 |
| Instrument Type | Mortar Grinder |
| Sample Suitability | Hard & Brittle Materials |
| Maximum Feed Size | <15 mm |
| Final Particle Size | <10 µm |
| Batch Capacity | 30 mL |
| Grinding Media | Natural Agate Mortar and Pestle |
Overview
The Jiubin JB-120 Agate Mortar Grinder is a precision laboratory grinding instrument engineered for controlled, contamination-free size reduction of hard, brittle, and chemically sensitive samples. Unlike high-energy ball mills or rotor-based grinders, the JB-120 employs manual or motor-assisted mortar-and-pestle mechanics grounded in classical mechanical comminution principles—leveraging compressive and shear forces under controlled pressure and rotational speed. This method ensures minimal heat generation, negligible metal wear contamination, and preservation of sample integrity—critical for applications in geochemical analysis, pharmaceutical excipient characterization, ceramic precursor processing, and nanomaterial synthesis where trace metal interference must be avoided. The device is designed for benchtop operation in ISO/IEC 17025-accredited laboratories, QC/QA environments, and R&D settings requiring reproducible sub-10 µm particle size distributions without solvent or cryogenic assistance.
Key Features
- Natural agate mortar and pestle set (Mohs hardness ~7) — chemically inert, non-porous, and resistant to acids (except HF), ensuring zero metallic leaching into samples
- Adjustable grinding speed (0–300 rpm) with digital speed control and real-time RPM feedback for process repeatability
- Sealed grinding chamber with silicone gasket and locking clamp mechanism to prevent cross-contamination and airborne loss
- Programmable grinding cycles (time range: 0.1–99.9 min) with automatic shutdown and audible alert
- Ergonomic, low-vibration base with anti-slip rubber feet and integrated cooling fins for thermal stability during extended operation
- Compliance-ready design: supports GLP documentation workflows via optional RS-232/USB data logging interface (firmware v2.1+)
Sample Compatibility & Compliance
The JB-120 is validated for grinding hard inorganic materials including quartz, feldspar, alumina, silicon carbide, borosilicate glass, and sintered ceramics. It is also widely used for pharmaceutical actives and excipients (e.g., lactose monohydrate, microcrystalline cellulose), geological core fragments, battery cathode precursors (LiCoO₂, NMC), and optical-grade pigments. All wetted parts conform to USP Class VI biocompatibility standards. The instrument meets CE safety directives (2014/30/EU EMC, 2014/35/EU LVD) and supports audit trails required under FDA 21 CFR Part 11 when paired with validated third-party LIMS integration. Routine calibration verification follows ASTM E2918–22 (Standard Practice for Verification of Mortar Grinder Performance).
Software & Data Management
The JB-120 operates via an embedded microcontroller with local parameter storage (up to 99 user-defined methods). Optional PC software (Jiubin LabControl v3.2, Windows 10/11 compatible) enables method synchronization, electronic batch records, PDF report generation (including timestamp, operator ID, RPM, duration, and ambient temperature), and CSV export for statistical process control (SPC) analysis. Audit trail functionality logs all parameter changes, user logins, and system events with SHA-256 hashing—fully compliant with ALCOA+ data integrity principles. Raw data files are stored in immutable .jbl format; conversion utilities support integration with LabWare LIMS and Thermo Fisher SampleManager.
Applications
- Preparation of XRF and ICP-MS calibration standards requiring ultra-low background metals
- Homogenization of geological reference materials (e.g., NIST SRM 278, GBW series) prior to acid digestion
- Particle size reduction of API batches for dissolution testing per USP & Ph. Eur. general chapter <711>
- Production of uniform ceramic green bodies for sintering studies
- Dispersion pre-treatment of graphene oxide or MXene flakes before sonication
- QC grinding of coated lithium iron phosphate (LFP) cathodes for SEM-EDS cross-section analysis
FAQ
Is the agate mortar autoclavable?
Yes—natural agate components withstand steam sterilization at 121°C for 20 minutes; however, repeated autoclaving may induce microfractures over time. We recommend chemical cleaning with dilute nitric acid (5% v/v) followed by DI water rinse.
Can the JB-120 achieve true nanoscale particles (e.g., <100 nm)?
No—it is optimized for consistent sub-10 µm output. For nanosizing, we recommend coupling with subsequent wet milling (e.g., planetary ball mill with zirconia media) or ultrasonication.
Does the instrument support GMP-compliant electronic signatures?
Yes—when operated with LabControl v3.2 and connected to a validated domain-authenticated Windows environment, it supports 21 CFR Part 11–compliant electronic signatures with role-based access control.
What maintenance is required?
Monthly visual inspection of pestle tip wear (using 10× magnifier); annual torque calibration of clamping mechanism; replacement of silicone gasket every 12 months or after 500 cycles.
Is technical support available outside China?
Yes—Jiubin maintains authorized service partners in Germany (Darmstadt), USA (Raleigh, NC), and Singapore; remote diagnostics and firmware updates are provided via secure TLS-encrypted portal.
