Shimadzu AA-7000 Flame Atomic Absorption Spectrometer (Refurbished)

Overview

The Shimadzu AA-7000 is a high-performance, double-beam flame atomic absorption spectrometer engineered for precise quantitative elemental analysis in routine laboratory environments. Based on the fundamental principle of atomic absorption spectroscopy—where ground-state free atoms in a flame absorb characteristic wavelengths of light—the AA-7000 utilizes hollow cathode lamp (HCL) or electrodeless discharge lamp (EDL) sources to generate narrow-line emission spectra. Light passes through the atomized sample in an air-acetylene or nitrous oxide-acetylene flame, and absorbance is measured by a photomultiplier tube detector. Its double-beam optical architecture compensates for source intensity drift and lamp fluctuations in real time, ensuring long-term baseline stability and measurement reproducibility. Designed and manufactured in Japan, the system meets stringent international quality benchmarks for analytical instrumentation and is widely deployed in pharmaceutical QC, environmental monitoring, food safety testing, and academic research laboratories requiring trace metal quantification at sub-ppb levels.

Key Features

• Double-beam optical design with real-time background correction via deuterium (D₂) lamp or Zeeman-effect methods—enabling accurate analysis in complex matrices with spectral interferences.
• Plane grating monochromator delivering 0.3 nm spectral resolution, optimized for peak separation of adjacent elemental lines (e.g., Fe 248.3 nm and Cr 248.4 nm).
• High-sensitivity photomultiplier tube detector with low dark current and wide dynamic range (0–2.5 A absorbance), supporting both low-concentration and high-absorbance measurements without manual gain adjustment.
• Automated wavelength scanning and lamp selection—reducing operator dependency and minimizing setup errors during multi-element workflows.
• Robust flame atomization system with programmable gas flow control, burner head auto-alignment, and flame failure safety interlocks compliant with IEC 61010-1.
• Factory-refurbished unit includes full optical alignment verification, nebulizer performance calibration, and flame optimization using certified reference materials (CRMs) traceable to NIST SRMs.

Sample Compatibility & Compliance

The AA-7000 supports aqueous liquid samples compatible with flame atomization—including digested environmental waters, acid-extracted soil leachates, diluted biological fluids, and pharmaceutical excipient solutions. It accommodates standard 100 mm slot-burners and optional hydride generation accessories (not included) for As, Se, Sb, and Hg analysis. The instrument complies with key regulatory frameworks governing analytical data integrity: its operational parameters are fully documented per GLP and GMP requirements; measurement logs include timestamped audit trails; and all calibration curves adhere to USP , ASTM D1688, and ISO 11047 protocols. While not natively 21 CFR Part 11-compliant, the system supports integration with validated LIMS platforms that provide electronic signature and data retention controls.

Software & Data Management

Instrument control and data acquisition are managed via Shimadzu’s dedicated AA-7000 software suite (v3.x or later), installed on a dedicated Windows-based PC. The interface enables method creation with customizable integration times, smoothing algorithms, and multi-point calibration (linear, quadratic, or forced-zero). All raw absorbance/time traces, calibration reports, and QC check results are stored in encrypted binary format with embedded metadata (operator ID, date/time, lamp ID, slit width, flame condition). Export options include CSV, PDF, and XML formats compatible with enterprise-level data review systems. Raw spectral scans and peak identification are supported for method development and troubleshooting. Software validation documentation (IQ/OQ/PQ summary) is available upon request for regulated users.

Applications

• Environmental compliance testing: Quantification of Pb, Cd, Ni, Zn, and Cu in drinking water per EPA Method 7000B and ISO 11047.
• Pharmaceutical elemental impurities screening: Verification of ICH Q3D Category 1 and 2 elements in active pharmaceutical ingredients (APIs) and excipients.
• Food and beverage quality control: Monitoring Na, K, Ca, Mg, Fe, and Mn in dairy products, infant formula, and fortified cereals per AOAC 984.27.
• Industrial catalyst and alloy analysis: Rapid assessment of residual metals in petrochemical feedstocks and electroplating baths.
• Academic teaching and research: Stable platform for undergraduate spectroscopy labs and graduate-level method validation studies.

FAQ

Is this unit factory-refurbished or user-refurbished?
This AA-7000 has undergone full factory-level refurbishment by authorized Shimadzu service partners in Japan, including optical recalibration, burner alignment, pneumatic system leak testing, and performance validation against NIST-traceable standards.
What documentation accompanies the instrument?
Each unit ships with a Certificate of Refurbishment, detailed service history log, calibration report (including Cu detection limit verification), and original Shimadzu operation manuals in English.
Does it support graphite furnace upgrade?
No—the AA-7000 model referenced here is the flame-only configuration. The GF-AAS variant (AA-7000G) is a separate hardware platform and cannot be retrofitted.
What maintenance contracts are available post-purchase?
Extended warranty and annual preventive maintenance plans are offered through certified Shimadzu service providers in North America and Europe, covering lamp replacement, nebulizer cleaning, and optical alignment verification.
Can it be integrated into a networked lab environment?
Yes—the instrument supports TCP/IP connectivity and can be remotely controlled via LAN using Shimadzu’s AA-7000 software; it also exports data to LIMS via secure FTP or ODBC drivers.