Gilson SS-22F Silent Sifter® II Rotational Sieve Analyzer
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SS-22F |
| Pricing | Upon Request |
Overview
The Gilson SS-22F Silent Sifter® II is a precision-engineered rotational sieve analyzer designed for standardized particle size distribution analysis in compliance with ASTM E11, ISO 3310-1, and USP . Operating on 230 V / 50 Hz power, this instrument employs a dual-mode motion profile—continuous rotation combined with controlled tapping—to ensure high reproducibility in dry sieve analysis across granular, powdered, and friable materials. Unlike conventional vibratory or rotary sieves, the SS-22F integrates advanced acoustic dampening architecture—including a fully enclosed MDF cabinet with compression-sealed gasketed door, vibration-isolated drive rollers, and UHMW-PE impact components—to achieve noise reduction of 16–18 dB(A) below standard rotary sieves and 8–10 dB(A) below its predecessor (SS-21F). This engineering directly supports occupational health compliance under OSHA 29 CFR 1910.95 and EU Directive 2003/10/EC, enabling extended daily operation without hearing protection in most laboratory environments.
Key Features
- Acoustically optimized enclosure: Dense, impact-resistant MDF housing with ASTM A513 powder-coated steel frame and center-lever latching system ensures dust-tight, low-noise operation
- Dual-motion separation mechanism: Two stainless-steel rubber-cushioned drive rollers rotate the sieve stack while simultaneously delivering calibrated tap impulses to enhance particle stratification and passage efficiency
- Precision timing control: Large 0.5-inch (12.7 mm) LED display with ±1-second accuracy over 0–99 minute countdown; pause/resume functionality preserves elapsed time during mid-cycle interruptions
- Ergonomic stack loading: Tool-free, knob-actuated cabinet rotation enables rapid placement and alignment of ASTM or ISO-compliant test sieves without clamps or torque tools
- Modular sieve capacity: Supports up to 20 × 8-inch (203 mm) half-height sieves or 6 × 12-inch (305 mm) full-height sieves; compatible with all standard frame diameters (200 mm, 300 mm) and mesh sizes (1 in to No. 635 / 25 mm to 20 µm)
- Robust drive system: Thermally protected ¼ HP continuous-duty motor with overload safeguard; hammer assembly constructed from 6061-T6 aluminum and UHMW polyethylene for wear resistance and minimal acoustic emission
Sample Compatibility & Compliance
The SS-22F accommodates a broad range of dry, free-flowing, and moderately cohesive particulates—including aggregates, pharmaceutical powders, catalysts, soils, ceramics, and metal alloys—without requiring pretreatment or dispersants. Its mechanical agitation profile meets the dynamic energy requirements specified in ASTM D6913 (soil gradation), ASTM C136 (fine/coarse aggregate), and ISO 2591-1 for general industrial powders. The sealed cabinet design limits airborne respirable crystalline silica (RCS) exposure per NIOSH REL and OSHA PEL guidelines, supporting GLP-aligned workflows in QC laboratories subject to FDA 21 CFR Part 11 audit readiness when paired with validated software protocols.
Software & Data Management
While the SS-22F operates via embedded hardware-based digital timer (no onboard data logging), it is fully compatible with Gilson’s optional SSA-76 Replacement Timer/Controller for firmware-upgradable timing logic. For traceable reporting, laboratories integrate the unit with LIMS or ELN platforms using manual entry of sieve weights pre- and post-analysis. All operational parameters—including voltage, current draw (5.4 A @ 230 V / 50 Hz), cycle duration, and sieve configuration—are documented in accordance with ISO/IEC 17025 clause 7.7 (equipment records) and support internal calibration verification per ASTM E3232. Optional accessories such as SSA-12 tamper caps and SSA-74 replacement hammer heads maintain measurement continuity across extended service intervals.
Applications
- Quality control of bulk pharmaceutical excipients and active ingredients per USP sieve analysis requirements
- Aggregate gradation testing for asphalt and concrete mix design per ASTM D6913 and AASHTO T 27
- Particle size validation of catalyst substrates and battery electrode materials in R&D settings
- Soil texture classification and sediment analysis in geotechnical and environmental labs
- Food ingredient consistency screening (e.g., flour, sugar, spices) under FDA HACCP and GMP frameworks
- Metallurgical powder characterization for additive manufacturing feedstock qualification (ASTM F3049)
FAQ
What voltage and frequency does the SS-22F operate on?
The SS-22F is configured for 230 V / 50 Hz operation with a rated current draw of 5.4 A.
Does the SS-22F include test sieves?
No—ASTM or ISO-compliant test sieves are ordered separately based on application-specific mesh requirements and frame dimensions.
Can the SS-22F be used for wet sieving?
No—it is engineered exclusively for dry sieve analysis; liquid introduction compromises acoustic sealing and mechanical integrity.
Is the SS-22F compliant with FDA 21 CFR Part 11?
The base unit lacks electronic data capture; however, its operation can be documented within Part 11–compliant systems when integrated with external weighing and reporting workflows.
What maintenance is required for long-term performance stability?
Routine inspection of UHMW hammer heads, roller tension, door gasket integrity, and motor ventilation ports is recommended every 500 operating hours per Gilson Technical Bulletin TB-SS-02.
