Varian SpectrAA Atomic Absorption Spectrometer (Refurbished)

Overview

The Varian SpectrAA Atomic Absorption Spectrometer is a precision-engineered, benchtop analytical instrument designed for quantitative elemental analysis in the parts-per-trillion (ppt) to parts-per-million (ppm) concentration range. Based on the fundamental principle of atomic absorption spectroscopy, the system measures the attenuation of narrow-band radiation from element-specific hollow cathode lamps as ground-state atoms in a flame or graphite furnace absorb light at characteristic wavelengths. This refurbished unit retains the original Varian optical architecture—including a single-beam optical path, a high-efficiency holographic grating monochromator (1200 lines/mm), and a wavelength range spanning 190–900 nm—ensuring compatibility with over 70 elements across environmental, clinical, pharmaceutical, and metallurgical applications. The inclusion of the GTA-110Z graphite furnace atomizer extends detection sensitivity by up to three orders of magnitude compared to flame AAS, enabling trace-level analysis of refractory elements such as As, Cd, Pb, Se, and Tl in complex matrices.

Key Features

• Factory-refurbished Varian SpectrAA platform with full functional validation against NIST-traceable standards
• GTA-110Z graphite furnace module featuring integrated temperature programming (up to 3000 °C), Zeeman background correction, and autosampler compatibility
• UltrAA lamp control system supporting up to six hollow cathode lamps with automatic lamp selection and alignment optimization
• Robust mechanical design with vibration-damped optical bench and thermally stabilized monochromator housing for long-term wavelength reproducibility
• Comprehensive safety interlocks including gas flow monitoring, flame failure detection, and furnace overtemperature cutoff
• Pre-installed firmware version compatible with Varian AA WinLab v3.5 and SpectrAA data acquisition software

Sample Compatibility & Compliance

The SpectrAA accommodates liquid samples via nebulization (flame mode) or micro-volume injection (graphite furnace mode), supporting aqueous, acidic digests (e.g., EPA Method 200.8, 200.9), and organic solvent-based extracts after appropriate matrix modification. It meets essential performance criteria outlined in ASTM D1688 (copper in water), ISO 11885 (water quality—determination of selected elements by AAS), and USP for elemental impurities testing. All refurbishment procedures—including optical alignment, burner head cleaning, graphite tube replacement, and lamp intensity verification—are documented under a controlled quality management system aligned with ISO/IEC 17025 requirements. The instrument is supplied with a full calibration report referencing NIST SRM 1643e (trace elements in water) and SRM 1640a (multi-element solution).

Software & Data Management

Data acquisition and processing are executed using Varian’s native SpectrAA software, which provides method development wizards, multi-point calibration curves (linear, quadratic, and weighted least-squares), QC flagging (e.g., drift correction, replicate RSD thresholds), and audit-trail-enabled reporting. The software supports 21 CFR Part 11-compliant user access controls when deployed on validated Windows OS platforms (Windows 7/10 LTSB). Raw spectral data, peak integration parameters, and furnace temperature ramp profiles are stored in proprietary .SAA format with embedded metadata (operator ID, date/time stamp, instrument serial number). Export options include CSV, PDF, and XML for LIMS integration. No cloud connectivity or remote telemetry is enabled by default—data residency remains fully under end-user control.

Applications

• Environmental monitoring: quantification of heavy metals (Cd, Cr, Ni, Zn) in wastewater, soil digests, and airborne particulate filters per EPA methods
• Clinical toxicology: blood lead (Pb) and urinary cadmium (Cd) analysis in accordance with CLIA and CAP guidelines
• Pharmaceutical quality control: elemental impurity screening in APIs and excipients per ICH Q3D
• Food safety: arsenic (As) in rice, mercury (Hg) in seafood, and aluminum (Al) in infant formula
• Geological and mining labs: base metal assays (Cu, Fe, Mn, Zn) in ore concentrates and leachates

FAQ

Is this instrument eligible for GLP/GMP compliance documentation?
Yes—upon request, we provide a full refurbishment dossier including calibration certificates, performance qualification (PQ) test reports, and a signed statement of conformance to ISO/IEC 17025 practices.
Does the 6-month warranty cover labor and parts?
Yes—the warranty includes onsite or depot-based technical support, replacement of defective components (including lamps, graphite tubes, and nebulizers), and software troubleshooting.
Can the system be upgraded to support hydride generation or cold vapor AAS?
No—the SpectrAA platform lacks native hydride/cold vapor hardware interfaces; however, third-party HG-AAS accessories may be retrofitted subject to optical alignment validation.
What consumables are included with the sale?
Standard shipment includes one set of Varian-certified graphite tubes (GTA-110Z), two hollow cathode lamps (user-specified elements), and a complete toolkit for routine maintenance.
Is training provided with purchase?
Yes—a 4-hour remote operator training session is included, covering instrument startup, method loading, basic calibration, sample analysis, and error diagnostics. Onsite training is available at additional cost.