Persee TAS-990 Atomic Absorption Spectrophotometer (Refurbished)

Overview

The Persee TAS-990 is a benchtop flame atomic absorption spectrophotometer engineered for quantitative elemental analysis in routine laboratory environments. It operates on the fundamental principle of atomic absorption spectroscopy: ground-state free atoms in a flame absorb light at element-specific wavelengths emitted by hollow cathode lamps. The instrument measures the attenuation of this characteristic radiation to determine analyte concentration via Beer-Lambert law correlation. Designed with dual-beam optical architecture, the TAS-990 minimizes drift from source intensity fluctuations and lamp aging—enhancing measurement stability over extended analytical sessions. Its wavelength range (190–900 nm) covers the resonance lines of over 70 elements, including Na, K, Ca, Mg, Fe, Cu, Zn, Pb, Cd, and Cr—making it suitable for applications in environmental water testing, pharmaceutical excipient trace metal screening, food safety compliance (e.g., ISO 11885, EPA Method 7000B), and industrial raw material certification.

Key Features

• Automated wavelength scanning and slit width selection (0.1–2.0 nm) for optimal sensitivity/resolution trade-off per element
• Dual-lamp turret supporting simultaneous lamp alignment and rapid switching between analytes without manual realignment
• Integrated flame control system with automatic gas flow regulation, flame ignition monitoring, and flame-out safety cutoff
• High-stability PMT detector with thermoelectric cooling for reduced dark current and improved signal-to-noise ratio
• Refurbishment includes full optical path cleaning, lamp spectral calibration verification, burner head replacement, nebulizer performance validation, and electronic subsystem diagnostic testing
• Comprehensive factory recertification report provided—including photometric accuracy (±0.002 A at 1.0 A), baseline stability (<0.003 A/30 min), and detection limit verification per ASTM D512 and ISO 8288

Sample Compatibility & Compliance

The TAS-990 accepts aqueous liquid samples prepared via acid digestion (EPA 3050B, ISO 11466) or direct dilution. It supports standard flame atomization for elements with ionization potentials < 8 eV and moderate volatility. Sample introduction is performed via concentric glass nebulizer and all-glass spray chamber; optional graphite furnace attachment (TAS-990GF) is available separately for sub-pptr detection of As, Se, Hg, and Sb. All refurbished units comply with IEC 61010-1 electrical safety standards and are verified for electromagnetic compatibility (EMC) per EN 61326-1. Instrument operation aligns with GLP and GMP data integrity expectations: audit trail logs capture user ID, method parameters, calibration events, result modifications, and timestamped print/export actions.

Software & Data Management

AAWin v3.2 software provides method development, calibration curve generation (linear, quadratic, or forced-zero), QC sample flagging, and automated report generation. It supports multi-user role assignment (Administrator, Analyst, Reviewer) with password-protected access levels. Electronic signatures meet FDA 21 CFR Part 11 requirements for regulated environments. Raw spectral data, peak tables, and integration parameters are stored in a relational database with immutable backup capability. Export formats include CSV (for LIMS integration), PDF (for QA review), and XML (for ELN synchronization). Software validation documentation (IQ/OQ protocols) is supplied with each unit.

Applications

• Environmental laboratories: Quantification of heavy metals in drinking water (US EPA 200.7), wastewater (ISO 11885), and soil extracts
• Pharmaceutical quality control: USP / elemental impurities testing in APIs and excipients
• Food and beverage labs: Determination of mineral nutrients (Ca, Fe, Zn) and toxicants (Pb, Cd) per AOAC 972.41 and ISO 17294-2
• Academic research: Teaching AAS fundamentals and supporting undergraduate analytical chemistry curricula
• Industrial QA/QC: Incoming raw material verification (e.g., catalyst metals in petrochemical feedstocks)

FAQ

Is this a genuine Persee instrument, or a rebranded OEM unit?
All TAS-990 units are original Persee-manufactured systems—designed and assembled at Persee’s Beijing facility under ISO 9001:2015 certified processes. No third-party rebadging is involved.
What refurbishment level does “professionally refurbished” entail?
Each unit undergoes 28-point functional verification, including optical alignment, burner alignment, nebulizer efficiency test, lamp spectral purity check, and full software diagnostics. Critical wear parts (burner heads, nebulizers, O-rings) are replaced; electronics are stress-tested for thermal stability.
Does the system include installation and training support?
Yes—remote setup assistance, SOP documentation, and one-on-one virtual operator training (2 hours) are included. On-site commissioning and IQ/OQ execution are available as optional services.
Can the TAS-990 be integrated into an existing LIMS environment?
Yes—via ASCII file export or OPC UA-compliant data streaming (optional driver license required). CSV output conforms to ASTM E1382-95 for LIMS ingestion.
What warranty and service coverage is provided?
12-month limited hardware warranty and 90-day software support. Extended service contracts (including preventive maintenance visits) are available globally through authorized Persee service partners.