Ants Scientific Instruments AF300 Automatic Sample Feeder
| Brand | Ants Scientific Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AF300 |
| Price Range | USD 7,000 – 14,000 |
| Sample Type | Free-flowing dry powders and granular materials |
| Hopper Capacity | 2.8 L and 3.5 L (interchangeable) |
| Feed Channel Width | 15 mm, 40 mm, or 75 mm |
| Feed Channel Profile | U-shaped or V-shaped (user-selectable) |
| Volumetric Feed Rate | 0–5 L/min (continuously adjustable) |
| Timer Range | 0–99 minutes (programmable) |
Overview
The Ants Scientific Instruments AF300 Automatic Sample Feeder is an engineered precision module designed for seamless integration with rotary sample dividers—particularly those conforming to ISO 13320, ASTM D6377, and ISO 11072 standards for representative sampling of bulk particulate solids. It operates on the principle of gravity-assisted, volumetric-controlled discharge via a motor-driven, variable-speed feed channel. Unlike manual or pneumatic feeding systems, the AF300 eliminates operator-induced variability by delivering consistent mass flow rates across heterogeneous powder batches, thereby ensuring statistical representativeness in downstream particle size analysis, composition testing, or quality control screening.
Key Features
- Motorized, continuously adjustable feed rate (0–5 L/min) with digital timer (0–99 min), enabling precise batch dosing and repeatable test protocols.
- Interchangeable hopper assemblies (2.8 L and 3.5 L) fabricated from electrostatic-dissipative polymer to minimize powder adhesion and static buildup during handling of fine or cohesive materials.
- Rotatable base mount with ±5° angular adjustment, ensuring coaxial alignment between feed outlet and the inlet aperture of the connected sample divider—critical for eliminating sample bypass or spillage at the interface.
- Modular feed channel system supporting three standardized widths (15 mm, 40 mm, 75 mm) and two cross-sectional profiles (U-shaped for free-flowing granules; V-shaped for controlled shear-sensitive or low-density powders).
- IP54-rated enclosure with sealed bearing housings and tool-free access panels, facilitating rapid cleaning and maintenance in regulated laboratory or pilot-plant environments.
Sample Compatibility & Compliance
The AF300 is validated for use with free-flowing, non-sticky dry particulates ranging from coarse granules (>1 mm) to fine powders (down to ~20 µm), including but not limited to pharmaceutical excipients, catalyst pellets, mineral ores, food-grade starches, and polymer resins. It complies with mechanical safety requirements per IEC 61000-6-2 (EMC immunity) and meets material contact compatibility guidelines under USP for polymeric components. When paired with ISO-certified rotary dividers, the integrated system supports GLP-compliant sampling workflows, with traceable parameter logging (feed rate, duration, hopper ID) required for FDA 21 CFR Part 11–aligned audit trails.
Software & Data Management
The AF300 operates as a stand-alone electromechanical unit with no embedded firmware or proprietary software dependency. All operational parameters—including feed rate setpoint, timer duration, and hopper selection—are configured via front-panel membrane keypad with LED feedback. For laboratories implementing LIMS or MES integration, optional RS-485 Modbus RTU output enables real-time transmission of operational status (e.g., “feeding active”, “timer expired”, “hopper empty”) to central data acquisition systems. Parameter change logs are retained locally for 30 days and can be exported via USB-C port in CSV format for QA documentation.
Applications
- Pre-analytical sample conditioning prior to laser diffraction (e.g., Malvern Mastersizer), dynamic image analysis (e.g., Sympatec QICPIC), or sieve cascade testing.
- Automated feed control in R&D-scale powder blending studies where dose reproducibility directly impacts blend uniformity assessment (per USP ).
- Standardized sampling of bulk raw materials in GMP manufacturing environments—especially where manual splitting introduces unacceptable inter-operator variance.
- Calibration verification of rotary dividers using certified reference materials (e.g., NIST SRM 1980), leveraging the AF300’s stable flow profile to isolate divider performance from upstream feeding artifacts.
FAQ
Is the AF300 compatible with non-Ants brand sample dividers?
Yes—the AF300 features a universal mounting interface and configurable outlet geometry; compatibility has been verified with common ISO-compliant dividers from Hosokawa Alpine, Retsch, and Sartorius.
Does it support hazardous or explosive dust environments?
Not natively; however, explosion-proof motor variants (ATEX Zone 22 / IECEx) are available upon request with lead-time extension and custom certification documentation.
Can feed rate be synchronized with analytical instrument triggers?
Yes—via optional TTL-level external start/stop input, allowing synchronization with detector acquisition windows in real-time particle sizing setups.
What maintenance intervals are recommended?
Visual inspection every 200 operating hours; lubrication of drive shaft bearings every 1,000 hours; full calibration check (flow rate verification against gravimetric standard) every 6 months or after 500 cycles.
Is validation documentation provided?
A Factory Acceptance Test (FAT) report, including mechanical alignment verification, flow linearity data (±2% RSD across range), and electrical safety certification, is supplied with each unit.
