Yoke RG-3628AA Atomic Absorption Spectrophotometer
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | RG-3628AA |
| Wavelength Range | 190–900 nm |
| Wavelength Repeatability | ≤0.05 nm |
| Wavelength Accuracy | ±0.1 nm |
| Photometric Range | 0–2.0 A (Absorbance) |
| Spectral Bandwidth | 0.1, 0.2, 0.7, 1.4, 2.0 nm (5-step automatic selection) |
| Lamp Positions | 8-slot rotating turret (360° motorized rotation) |
| Atomization Modes | Flame and External Graphite Furnace |
| Background Correction | Dual-mode — D₂ continuum lamp (full-spectrum) and high-performance self-reversal (SR) |
Overview
The Yoke RG-3628AA Atomic Absorption Spectrophotometer is a benchtop flame/graphite furnace AAS system engineered for precision elemental quantification in environmental, pharmaceutical, food safety, and industrial quality control laboratories. It operates on the principle of atomic absorption spectroscopy (AAS), where ground-state free atoms in a gaseous state absorb characteristic wavelengths emitted by hollow cathode lamps (HCLs) or electrodeless discharge lamps (EDLs). The instrument employs a high-efficiency all-reflective optical path—free of chromatic aberration—to maximize signal-to-noise ratio and photometric stability across its full 190–900 nm spectral range. Designed for regulatory-compliant workflows, the RG-3628AA integrates dual background correction methodologies: full-spectrum deuterium (D₂) lamp correction for broad-band molecular absorption and high-fidelity self-reversal (SR) correction for narrow-line interference—enabling accurate measurement even in complex matrices with high spectral overlap.
Key Features
- All-reflective optical system with fused silica-coated mirrors and optimized beam geometry to minimize stray light and thermal drift, ensuring long-term baseline stability and reproducible absorbance readings.
- Motorized 8-lamp turret with 360° continuous rotation and automatic lamp alignment—reducing manual intervention and lamp positioning error while supporting simultaneous pre-heating of up to three lamps.
- Intelligent gas control module with real-time pressure monitoring, leak detection, and fail-safe shut-off logic compliant with EN ISO 15001 and OSHA laboratory ventilation guidelines.
- Automated wavelength scanning and spectral bandwidth selection (0.1–2.0 nm, five discrete steps) via software-controlled monochromator, enabling method-specific resolution tuning per analyte.
- Dual-atomization capability: integrated flame atomizer with adjustable air-acetylene/nitrous oxide gas mixing, plus support for external graphite furnace systems (e.g., Yoke GF-3600) via standardized electrical and pneumatic interfaces.
- Rugged, modular mechanical design with vibration-damped baseplate and thermally stabilized monochromator housing—optimized for consistent performance under non-climate-controlled lab conditions.
Sample Compatibility & Compliance
The RG-3628AA accommodates liquid samples introduced via standard nebulizer-burner assemblies (e.g., concentric glass or high-solids resistant PFA) and solid suspensions up to 15% w/v when paired with appropriate matrix modifiers. It supports ASTM D1688 (copper in water), ISO 11171 (trace metals in fuels), and USP heavy metals testing protocols. All firmware and software operations comply with GLP data integrity requirements—including electronic signatures, audit trail logging, and user-access level controls—as defined in FDA 21 CFR Part 11 Annex 11. Instrument qualification documentation (IQ/OQ/PQ templates) is provided for GMP-regulated environments.
Software & Data Management
RG-WinAAS is a Windows-native application built on .NET Framework with native Unicode support and multi-language UI (English, Spanish, Chinese). It provides full instrument control, method development, calibration curve generation (linear, quadratic, log-log), QC charting (Levey-Jennings, Shewhart), and automated report export to PDF, CSV, or LIMS-compatible XML. Raw spectral data and processing metadata—including lamp current, slit width, integration time, and background correction residuals—are stored in encrypted SQLite databases with immutable timestamps. Audit trails record every parameter change, sample injection event, and user login/logout with IP address and workstation ID.
Applications
- Environmental testing: Pb, Cd, As, Hg, Cr quantification in drinking water (EPA Method 200.7/200.9), soil extracts, and wastewater effluents.
- Pharmaceutical QA/QC: Catalyst metal residue analysis (e.g., Pd, Pt, Ni) in active pharmaceutical ingredients per ICH Q2(R2) guidelines.
- Food and beverage: Na, K, Ca, Mg, Fe, Zn profiling in fortified dairy, infant formula, and plant-based beverages (AOAC 984.27).
- Geological and metallurgical labs: Cu, Zn, Mn, Co determination in ore digests and alloy leachates using flame-AAS with nitrous oxide–acetylene enhancement.
- Academic research: Method validation studies requiring trace-level detection (sub-ppb LODs achievable with graphite furnace coupling) and inter-laboratory comparison exercises.
FAQ
Does the RG-3628AA support both flame and graphite furnace atomization simultaneously?
No—the instrument features a shared optical path and sample introduction interface; users must select either flame or external graphite furnace mode via software configuration and physical setup.
Is RG-WinAAS compatible with LIMS integration?
Yes—via configurable ODBC drivers and structured XML output templates that map to ASTM E1384 and CLSI LIS-02-A3 standards.
What certification documentation is supplied with the system?
Factory calibration certificates (wavelength accuracy, photometric linearity), CE Declaration of Conformity, RoHS compliance statement, and ISO 9001-certified manufacturing records are included in the shipment dossier.
Can third-party hollow cathode lamps be used?
Yes—provided they meet ANSI/ISA S50.1 pinout specifications and operate within 5–25 mA current range; Yoke recommends certified lamps for optimal spectral purity and lifetime.
Is remote diagnostics supported?
Yes—optional Yoke Remote Assist module enables secure, encrypted technician access for firmware updates, error log analysis, and configuration review—subject to customer IT policy approval.
