DS FW80 High-Speed Universal Grinder
| Brand | DS |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | FW80 |
| Instrument Type | Laboratory Grinder |
| Sample Suitability | Hard and Brittle Materials |
| Output Particle Size | 0.01–0.5 mm |
| Maximum Feed Size | <15 mm |
| Sieve Range | 400–200 mesh (37–74 µm) |
| Batch Capacity | ≤50 g |
Overview
The DS FW80 High-Speed Universal Grinder is a compact, benchtop laboratory grinding instrument engineered for rapid, reproducible size reduction of hard, brittle, and fibrous solid samples. It operates on the principle of high-speed impact milling—utilizing a rapidly rotating stainless-steel rotor equipped with precision-ground cutting blades to deliver controlled mechanical energy to the sample. This mechanism enables efficient comminution through repeated collision, shearing, and attrition within a sealed grinding chamber. Designed for routine sample preparation in analytical workflows, the FW80 supports downstream techniques including elemental analysis (e.g., XRF, ICP-OES), moisture content determination, homogenization prior to extraction, and particle-size distribution screening. Its robust architecture ensures consistent performance across diverse sample matrices without thermal degradation—critical for preserving analyte integrity in soil, botanical, pharmaceutical, and mineralogical applications.
Key Features
- High-precision grinding chamber and dual-edged rotor blades fabricated from imported austenitic stainless steel (AISI 304), offering superior corrosion resistance, non-reactivity, and minimal metal leaching during operation.
- Optimized aerodynamic chamber geometry minimizes sample retention and cross-contamination between batches—validated via rinse recovery tests per ISO 17025-compliant protocols.
- Variable-speed motor control (fixed at 25,000 rpm nominal) delivers consistent kinetic energy input, enabling repeatable particle size distributions across replicate runs.
- Interlocked safety lid with automatic power cutoff prevents operation when open—compliant with IEC 61000-6-2 (EMC immunity) and IEC 60335-1 (household and similar electrical appliance safety).
- Modular design allows quick disassembly for cleaning; all wetted parts are autoclavable or compatible with ethanol/acetone decontamination.
Sample Compatibility & Compliance
The FW80 accommodates dry, non-oily, low-moisture (<10% w/w) samples including dried plant tissues, air-dried soils, granular pharmaceutical excipients, crushed ores, coal fragments, and brittle ceramics. It is unsuitable for thermolabile compounds, sticky polymers, or high-fat biological matrices without pre-freezing. The instrument meets general requirements for GLP-compliant laboratories: traceable calibration records (via optional tachometer verification), documented maintenance logs, and compatibility with audit-ready SOPs. While not certified to FDA 21 CFR Part 11 out-of-the-box, its operational parameters support integration into Part 11–governed environments when paired with validated electronic lab notebook (ELN) systems for batch record generation.
Software & Data Management
The FW80 is a standalone electromechanical device without embedded firmware or digital interface. All operational parameters—including run duration, batch ID, and operator initials—are manually recorded in laboratory notebooks or integrated into LIMS via standardized template entries (e.g., ASTM E1447). For traceability, users may pair the grinder with time-stamped video documentation or external RPM loggers. DS provides a comprehensive validation support package, including IQ/OQ templates aligned with ISO/IEC 17025:2017 Annex A.3 for equipment qualification in accredited testing laboratories.
Applications
- Soil science: Homogenization of field-collected soil cores prior to heavy metal analysis (EPA Method 6010D) or organic carbon quantification (ISO 14235).
- Phytochemistry: Preparation of dried herb powders for HPLC-based alkaloid profiling or GC-MS volatile oil analysis.
- Geochemistry: Pulverization of rock/mineral specimens to <74 µm for X-ray fluorescence (XRF) fusion bead preparation (ASTM D5630).
- Quality control labs: Rapid grinding of tablet fragments for assay uniformity testing per USP <905>.
- Agricultural research: Milling of cereal grains and legume seeds for proximate analysis (AOAC 985.29, 991.42).
FAQ
What is the recommended maintenance schedule for the FW80?
Perform visual inspection of blade sharpness and chamber integrity before each use. Replace rotor blades after 200 cumulative operating hours or upon visible wear—documented in the equipment logbook.
Can the FW80 be used for cryogenic grinding?
No. The unit lacks liquid nitrogen porting or thermal insulation. For sub-ambient grinding, pre-chill samples to −20 °C and limit run time to ≤30 seconds per batch to avoid motor overload.
Is the output particle size distribution narrow or broad?
The FW80 produces a moderately polydisperse output (span ≈ 1.8–2.2, measured by laser diffraction per ISO 13320). For narrower distributions, integrate with a vibratory sieve shaker (e.g., Retsch AS 200) post-grinding.
Does DS provide method development support?
Yes. DS offers application notes and SOP drafts for common matrices (soil, leaf tissue, limestone), including parameter optimization tables for feed size, dwell time, and sieve selection—available under NDA upon request.
