AS ONE UD-1 Modular Desiccator Cabinet
| Brand | AS ONE |
|---|---|
| Origin | Japan |
| Manufacturer | AS ONE Corporation |
| Product Type | Vacuum Desiccator Cabinet |
| Model No. | 1-023-01 |
| External Dimensions | 250 × 250 × 250 mm |
| Internal Chamber Dimensions | 215 × 220 × 200 mm |
Overview
The AS ONE UD-1 Modular Desiccator Cabinet is a compact, precision-engineered vacuum desiccation solution designed for controlled moisture removal and long-term storage of hygroscopic, oxidation-sensitive, or calibration-standard materials in analytical laboratories, quality control environments, and R&D facilities. Unlike conventional static desiccators, the UD-1 integrates structural modularity with vacuum-compatible chamber integrity to enable reliable low-humidity conditioning without reliance on continuous purge gas flow. Its operation is based on vacuum-assisted desiccation: by evacuating air from the sealed chamber and introducing a desiccant (e.g., silica gel or phosphorus pentoxide), the system achieves and maintains internal relative humidity levels below 5% RH—critical for preserving reference standards, electronic components, optical filters, and pre-weighed samples prior to gravimetric analysis. The cabinet’s rigid polypropylene construction ensures chemical resistance to common desiccants and compatibility with vacuum pumps rated up to 10⁻² mbar.
Key Features
- Modular interlocking design: Integrated top and side connection interfaces allow secure horizontal or vertical stacking—eliminating misalignment and mechanical instability during multi-unit configurations.
- Robust one-piece molded chamber: Seamless polypropylene body with reinforced corner geometry ensures dimensional stability, leak resistance, and consistent vacuum hold time (>48 h at 10⁻¹ mbar with standard desiccant).
- Vacuum-tight sealing system: Dual-lip silicone gasket with uniform compression profile across all four chamber edges guarantees repeatable seal integrity under repeated evacuation cycles.
- RoHS 2-compliant materials: All structural and sealing components meet EU Directive 2015/863 requirements, ensuring absence of restricted substances including lead, cadmium, mercury, and specific phthalates.
- Compact footprint: External dimensions of 250 × 250 × 250 mm optimize benchtop utilization while providing an effective internal volume of 9.46 L—sufficient for storing multiple 100-mL sample jars or calibrated weights in ISO/IEC 17025-compliant storage protocols.
Sample Compatibility & Compliance
The UD-1 accommodates a wide range of sample formats—including glass desiccator dishes, aluminum weighing pans, ceramic crucibles, and sealed vials—without compromising vacuum performance. Its inert polypropylene interior resists degradation from sulfuric acid–based desiccants, calcium sulfate, and molecular sieves (3Å, 4Å). The unit is routinely deployed in GLP- and GMP-regulated settings where documented environmental control is required for reference material certification (per ISO Guide 34) and stability-indicating storage (per ICH Q5C). While not a Class I medical device, its construction and material traceability support audit readiness for FDA 21 CFR Part 11–aligned documentation systems when integrated into validated laboratory workflows.
Software & Data Management
The UD-1 operates as a standalone passive desiccation platform and does not include embedded electronics, sensors, or firmware. As such, it requires external vacuum monitoring via analog or digital vacuum gauges (e.g., Pirani or capacitance manometers) connected through its standard 6 mm OD quick-coupling port. Users integrate the unit into broader environmental data logging ecosystems using third-party pressure transducers paired with compliant software platforms (e.g., LabVIEW, DeltaV, or ELN-integrated SCADA modules) that support electronic signature, audit trail, and metadata tagging per ALCOA+ principles. Calibration certificates for associated vacuum measurement devices are recommended annually per ISO/IEC 17025 Clause 6.5.
Applications
- Pre-analytical conditioning of moisture-sensitive reagents (e.g., anhydrous salts, lithium aluminum hydride) prior to titration or ICP-MS sample preparation.
- Storage of NIST-traceable weight sets and volumetric glassware in metrology labs maintaining ISO/IEC 17025 accreditation.
- Stabilization of photomultiplier tubes, IR detector elements, and thin-film coated optics requiring sub-10% RH environments.
- Intermediate holding of dried biological standards (e.g., lyophilized proteins, freeze-dried controls) during assay development under cGMP-aligned conditions.
- Stacked deployment in high-density cleanroom cabinets where floor space optimization and vibration-isolated stacking are essential design criteria.
FAQ
Can the UD-1 be used under continuous vacuum?
Yes—its gasket and chamber design support sustained vacuum operation up to 10⁻² mbar when paired with an appropriate two-stage rotary vane pump.
Is the internal chamber autoclavable?
No—polypropylene is not rated for steam sterilization; maximum continuous operating temperature is 60°C.
What vacuum gauge interface does it support?
Standard 6 mm outer diameter compression fitting compatible with most laboratory-grade vacuum gauges and tubing.
Does AS ONE provide validation documentation for the UD-1?
The unit ships with a RoHS 2 Declaration of Conformity and material composition certificate; IQ/OQ protocols must be developed in-house per user-specific regulatory requirements.
Can desiccant be regenerated inside the chamber?
No—desiccant regeneration requires elevated temperature and airflow; removal and off-chamber thermal reactivation is required per manufacturer guidelines.
