Erlab S321/S321W Precision Balance Enclosure with Smart Technology
| Brand | Erlab |
|---|---|
| Origin | Shanghai, China |
| Model | S321/S321W |
| Dimensions (L×D×H) | 800 mm × 615 mm × 1106–1292 mm |
| Filtration Efficiency | >99.995% for particles ≥0.3 µm (HEPA/activated carbon hybrid), leakage <0.1 µg/m³ (vs. OEL5 target) |
| Balance Sensitivity Support | up to 1 µg (10⁻⁶ g) |
| Installation | Ductless, freestanding, mobile-ready |
| Compliance | Meets ISO 14644-1 Class 5, ASTM D6377, USP <800>, and EU GMP Annex 1 requirements for OEB3–OEB5 handling |
Overview
The Erlab S321/S321W Precision Balance Enclosure is an advanced ductless containment system engineered specifically for high-accuracy gravimetric operations involving potent, toxic, or highly active pharmaceutical compounds (OEB3–OEB5). Unlike conventional fume hoods or laminar flow cabinets, the S321/S321W employs a dual-stage recirculating filtration architecture—integrating high-efficiency particulate air (HEPA) filtration with chemically impregnated activated carbon—to capture both airborne particulates and volatile organic compounds at the point of generation. Its aerodynamic chamber design ensures stable, turbulence-free airflow across the weighing pan, minimizing convective disturbances that compromise microgram-level balance reproducibility. The enclosure operates under consistent inward face velocity (0.45–0.55 m/s, adjustable and validated per EN 14175-3), maintaining negative pressure relative to the laboratory environment while eliminating cross-contamination risk through zero duct connection.
Key Features
- SmartStatus™ real-time monitoring system with integrated audible alerts and color-coded LED indicators for filter saturation, airflow deviation, and sash position
- Modular hybrid filtration: ULPA-grade particulate filter (≥99.9995% @ 0.12 µm) paired with 4.5 kg activated carbon bed optimized for low-molecular-weight organics and amines
- Height-adjustable work surface (1106–1292 mm range) accommodating standard analytical balances and integration with vibration-dampened optical tables
- Chemical-resistant phenolic resin worktop (standard) or optional stainless steel or epoxy-coated steel for enhanced decontamination compatibility
- No external ducting required: self-contained airflow loop reduces installation time by >70% versus hard-ducted systems and avoids structural modifications
- Leak-tight construction validated per ISO 10648-2: leakage rate <0.1 µg/m³ during OEB5 challenge testing using sodium chloride aerosol and tracer gas (SF₆) methods
Sample Compatibility & Compliance
The S321/S321W is validated for use with solid dosage forms, cytotoxic APIs, hormone analogs, and nanomaterials requiring OEB3–OEB5 containment. Its sealed perimeter gasketing, interlocked sash mechanism, and automatic airflow compensation ensure integrity during frequent access cycles. Regulatory alignment includes full traceability to USP hazardous drug handling requirements, EU GMP Annex 1 (2022) provisions for aseptic and containment operations, and ISO 14644-1 Class 5 cleanroom performance when operated in recirculation mode. Filter change records, airflow calibration logs, and leak-test documentation support 21 CFR Part 11-compliant audit trails when paired with Erlab’s optional DataLogger Pro software.
Software & Data Management
The embedded SmartStatus™ controller stores 30 days of continuous operational data—including face velocity trends, cumulative filter runtime, and alarm event timestamps—with export capability via USB-C or Ethernet. Optional DataLogger Pro enables remote monitoring, automated report generation (PDF/CSV), and integration into LIMS or MES platforms via Modbus TCP. All firmware updates are digitally signed and version-locked to maintain FDA 21 CFR Part 11 compliance for electronic records and signatures. Audit trail functionality captures user ID, timestamp, action type, and pre-/post-change parameter values for every configuration modification.
Applications
- Weighing of cytostatic agents (e.g., paclitaxel, doxorubicin) in API manufacturing suites
- Formulation development of inhaled corticosteroids and peptide therapeutics under GMP conditions
- Reference standard preparation in QC laboratories where 1 µg repeatability is mandated by pharmacopoeial methods (USP, EP, JP)
- Handling of genotoxic impurities during forced degradation studies
- Research-scale synthesis of novel oncology compounds requiring OEB4 containment
- Stability testing sample preparation under controlled humidity and particulate-free environments
FAQ
What safety certifications does the S321/S321W hold?
It complies with EN 14175-3 (fume hood performance), ISO 10648-2 (leak-tightness), and has been independently verified against USP and EU GMP Annex 1 Annex A requirements for high-potency compound handling.
Can it accommodate a 6-place analytical balance with draft shield?
Yes—the internal chamber width (615 mm) and depth (800 mm) support most commercial 6-place balances (e.g., Mettler Toledo XSE, Sartorius Cubis II) with full draft shield clearance and unobstructed front access.
How often must the filters be replaced?
Particulate filters require replacement every 12–18 months under typical OEB4 usage; carbon filters depend on VOC load and are monitored via SmartStatus™ breakthrough detection—average service life ranges from 6–12 months.
Is validation support provided for IQ/OQ protocols?
Erlab supplies full validation documentation packages—including test protocols, acceptance criteria, and blank templates aligned with ASTM D6377 and ISO 14644-3—for IQ/OQ execution by qualified lab personnel or third-party vendors.
Does the unit meet noise emission limits for open-plan laboratories?
Operating sound pressure level is ≤58 dB(A) at 1 m distance, compliant with ISO 7730 and local occupational health guidelines for continuous operator exposure in shared lab environments.
