Ruishenbao PrepM-01 Variable-Frequency Vibratory Disc Grinder

Overview

The Ruishenbao PrepM-01 Variable-Frequency Vibratory Disc Grinder is an engineered solution for rapid, high-fidelity size reduction of hard, brittle, and fibrous solid samples in analytical and quality control laboratories. It operates on the principle of high-frequency eccentric vibratory motion—generated by a precisely balanced rotating eccentric mass—transmitted through a rigid disc platform to the grinding chamber. This mechanism imparts controlled kinetic energy to grinding media and sample simultaneously, enabling efficient comminution without thermal degradation or contamination from prolonged mechanical shear. Unlike planetary ball mills or jaw crushers, the PrepM-01 achieves sub-75 µm particle size distributions with minimal operator intervention and no requirement for cryogenic cooling. Its design prioritizes repeatability across batches, making it suitable for sample preparation workflows supporting X-ray fluorescence (XRF), X-ray diffraction (XRD), inductively coupled plasma (ICP-OES/MS), and wet chemical analysis where particle homogeneity and matrix integrity are critical.

Key Features

• Variable-frequency speed control (0–1450 rpm) enables precise tuning of impact energy for diverse material classes—from quartz and ceramics to plant tissue and alloy fragments.
• Eccentric vibratory drive system delivers low-noise operation (<65 dB(A)) and eliminates airborne dust emission via fully sealed grinding chambers and integrated gasketed door interlocks.
• Interlocked safety architecture: motor power is electrically cut off unless the hinged access door is mechanically latched—complying with IEC 61000-6-2 and ISO 13857 requirements for laboratory equipment.
• Modular chamber configuration supports single-, triple-, or hexa-chamber setups; standard volumes include 50 mL, 100 mL, 150 mL, 200 mL, 300 mL, and 400 mL—each compatible with interchangeable liners made from tungsten carbide, chromium steel, manganese steel, agate, or alumina.
• Digital time relay interface allows preset grinding durations from 10 seconds to 99 minutes; no external software or computer connection is required for routine operation.

Sample Compatibility & Compliance

The PrepM-01 accommodates feed particles up to 15 mm in maximum dimension and consistently reduces them to a D90 ≤ 75 µm—meeting ASTM E1900 and ISO 13320 laser diffraction sizing prerequisites for homogenized analytical powders. It is validated for use with geological matrices (e.g., silicates, oxides), metallurgical alloys, pharmaceutical excipients, and botanical materials. All wetted components comply with USP Class VI biocompatibility standards when configured with agate or alumina liners. The unit’s electrical design conforms to CE marking directives (2014/30/EU EMC Directive and 2014/35/EU LVD Directive), and its operational documentation supports audit readiness under GLP (OECD Principles) and GMP (FDA 21 CFR Part 211) frameworks.

Software & Data Management

The PrepM-01 operates via embedded firmware with a front-panel LED display and push-button timer interface. While it does not feature network connectivity or proprietary software, all grinding parameters—including duration, speed setpoint, and cycle count—are logged locally in non-volatile memory with timestamping. Optional RS-232 or USB-to-serial adapters enable integration into LIMS environments for automated parameter logging and electronic batch record generation. Audit trail functionality meets FDA 21 CFR Part 11 requirements when paired with validated third-party data acquisition systems.

Applications

• XRF sample preparation for geochemical assay, cement clinker analysis, and mining exploration core testing.
• Homogenization of certified reference materials (CRMs) prior to digestion or fusion procedures.
• Pre-grinding step before high-energy milling or bead-beating in genomics and proteomics workflows.
• Particle size standardization for method validation studies under ISO/IEC 17025-accredited testing laboratories.
• Routine QC grinding of incoming raw materials in ceramics, refractories, and pigment manufacturing.

FAQ

What materials are compatible with the PrepM-01 grinding chambers?
Tungsten carbide, chromium steel, manganese steel, agate, and alumina liners are available as standard; custom linings (e.g., zirconia, silicon nitride) can be fabricated upon request.
Can the PrepM-01 be used for moisture-sensitive samples?
Yes—optional inert gas purge ports (N₂ or Ar) are available on all chamber configurations to maintain an anhydrous or oxygen-free environment during grinding.
Is calibration required before use?
No routine calibration is needed; however, periodic verification of rotational speed accuracy using a handheld tachometer is recommended per ISO/IEC 17025 Section 6.5.
How is maintenance performed on the eccentric drive assembly?
The sealed-for-life bearing system requires no lubrication; annual inspection of belt tension and mounting bolt torque is advised per the manufacturer’s maintenance schedule.
Does the PrepM-01 support regulatory compliance for pharmaceutical labs?
When operated with documented SOPs and paired with validated cleaning procedures, it satisfies equipment qualification (IQ/OQ/PQ) requirements under EU Annex 15 and FDA guidance for analytical instrument lifecycle management.