Yoke RG-3608AA Flame Atomic Absorption Spectrometer
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Flame AAS |
| Monochromator | Plane Grating |
| Optical System | Single-Beam |
| Detector | Solid-State Detector |
| Background Correction | D₂ Lamp Correction + Self-Reversal Double Background Correction |
| Wavelength Range | 190–900 nm |
| Spectral Bandwidth | 0.1, 0.2, 0.7, 1.4, 2.0 nm (5-step automatic selection) |
| Wavelength Accuracy | ±0.2 nm |
| Lamp Positions | 8-position rotating turret (360° rotation) |
| Atomization Modes | Flame only (graphite furnace compatible via external module) |
| Detection Limit (Flame) | ≤0.006 µg/mL (for Cu) |
| Repeatability (RSD) | ≤0.6% |
| Background Correction Method | Deuterium Arc Lamp + High-Performance Self-Reversal Dual-Mode Correction |
Overview
The Yoke RG-3608AA Flame Atomic Absorption Spectrometer is a precision analytical instrument engineered for quantitative elemental analysis in laboratory and quality control environments. It operates on the fundamental principle of atomic absorption spectroscopy (AAS), wherein ground-state atoms in a flame atomizer absorb characteristic radiation emitted by a hollow cathode lamp (HCL) or electrodeless discharge lamp (EDL). The degree of absorption—measured at specific wavelengths within the 190–900 nm spectral range—is directly proportional to analyte concentration, enabling trace-level quantification down to ≤0.006 µg/mL for copper under optimized flame conditions. Designed as a single-beam system with a plane grating monochromator, the RG-3608AA delivers high optical throughput and stable baseline performance. Its all-reflective optical path minimizes chromatic aberration and enhances signal-to-noise ratio, critical for reproducible low-concentration measurements in compliance-driven workflows.
Key Features
- 8-position fully automated lamp turret with 360° rotational alignment—enables rapid sequential analysis of up to eight elements without manual lamp replacement or realignment.
- Dual-mode background correction: integrated deuterium arc lamp (D₂) correction across the full 190–350 nm range, combined with high-fidelity self-reversal (SR) correction for enhanced accuracy in complex matrices containing molecular absorption or structured background.
- Intelligent gas control module with real-time pressure monitoring, flame failure detection, and interlocked safety shutoff—fully compliant with ISO 22000 and OSHA-compliant laboratory gas handling protocols.
- Automated wavelength scanning and bandwidth selection: five programmable spectral bandwidths (0.1, 0.2, 0.7, 1.4, 2.0 nm) are selected dynamically based on elemental line profile and matrix interference requirements.
- Optimized flame atomization system featuring precision-adjustable nebulizer, impact bead design, and motorized burner head elevation—ensuring consistent aerosol generation and residence time for improved sensitivity and RSD ≤0.6% (n=10, Cu standard).
- Modular architecture supports optional integration with external graphite furnace units (e.g., GF-3608 accessory), extending detection capability to sub-pg/mL levels while maintaining software and calibration continuity.
Sample Compatibility & Compliance
The RG-3608AA is validated for aqueous and dilute acid-digested samples (e.g., HNO₃/HCl mixtures per EPA Method 200.7 and ASTM D1688). It meets essential performance criteria outlined in ISO 11170 (AAS instrumentation verification), USP , and CLSI EP10-A3 for method verification. All firmware and control logic adhere to IEC 61508 SIL-2 functional safety requirements for laboratory gas systems. Data integrity features—including electronic signatures, audit trails, and user-access-tiered permissions—support compliance with FDA 21 CFR Part 11 and GLP/GMP documentation standards when deployed with validated RG-WinAAS software configurations.
Software & Data Management
RG-WinAAS is a native Windows-based application built on .NET Framework 4.8, offering full instrument control, method development, calibration curve fitting (linear, quadratic, weighted least-squares), and QC charting (Levey-Jennings, Shewhart). Raw spectral data are stored in vendor-neutral CSV and XML formats; audit logs record every parameter change, calibration event, and user login with timestamp and IP metadata. The software supports LIMS integration via ASTM E1384-compliant HL7 messaging and includes built-in report templates aligned with ISO/IEC 17025 clause 7.8.2 for result reporting.
Applications
The RG-3608AA serves routine and regulatory applications across environmental testing (heavy metals in wastewater per ISO 11885), food safety (Pb, Cd, As in infant formula per EU Commission Regulation (EU) No 1881/2006), pharmaceutical excipient testing (Ni, Co in API raw materials per ICH Q2(R2)), and industrial process control (Fe, Mn, Zn in plating baths). Its dual-background correction ensures robustness in high-salt matrices such as seawater extracts or soil digests, where continuum and structured background overlap commonly challenge conventional flame AAS platforms.
FAQ
Does the RG-3608AA support graphite furnace analysis?
Yes—while configured as a flame-only system by default, it is mechanically and electronically compatible with externally mounted graphite furnace modules (e.g., Yoke GF-3608), requiring only firmware update and software license activation.
Is RG-WinAAS compliant with 21 CFR Part 11?
Yes—when installed on a domain-joined Windows machine with Group Policy–enforced password policies, RG-WinAAS implements electronic signatures, operation audit trails, and role-based access control meeting Part 11 Subpart B requirements.
What calibration standards are recommended for initial validation?
NIST-traceable single-element standards (e.g., NIST SRM 3100 series) diluted in 2% v/v nitric acid are recommended; multi-element calibration is supported but requires linearity verification per element per ISO 11170 Annex C.
Can the instrument be operated remotely via network?
Yes—RG-WinAAS supports TCP/IP-based remote control over LAN using secure RDP or vendor-provided VNC wrapper with TLS 1.2 encryption; no cloud connectivity or internet exposure is required or enabled by default.
