Anjie AJ-1000 Flow Injection Analyzer
| Brand | Anjie |
|---|---|
| Origin | Shanghai, China |
| Model | AJ-1000 |
| Product Type | Flow Injection Analyzer |
| Wavelength Range | 340–1100 nm |
| Sample Capacity | 162 positions |
| Reagent Positions | 3–8 |
| Flow Cell Path Length | 10 mm |
| Light Source | Tungsten-Halogen Lamp |
Overview
The Anjie AJ-1000 Flow Injection Analyzer (FIA) is a fully automated, multi-channel discrete-segmented flow system engineered for high-throughput, reproducible quantification of inorganic and organic analytes in aqueous environmental and public health matrices. Based on the core principle of controlled dispersion and reproducible mixing within a continuous carrier stream—governed by precise timing, defined flow rates, and optimized reaction coil geometry—the AJ-1000 implements standardized FIA methodology compliant with ISO 15681-1:2022 (Water quality — Determination of orthophosphate — Part 1: Flow injection analysis (FIA)) and ASTM D7511–19 (Standard Test Method for Total Nitrogen in Water by Automated Flow Injection Analysis). Its modular architecture integrates fluidic control, photometric detection, and intelligent sample handling to deliver robust performance in routine compliance monitoring and method-flexible research workflows.
Key Features
- Fully automated multi-channel operation: Supports simultaneous analysis across up to eight independent channels, each configurable with dedicated reagent lines, reaction coils, and detection modules.
- Polar-coordinate autosampler: Equipped with 162-position sample tray, dual large-volume wash solution reservoirs, and integrated needle-wash station—designed for unattended batch processing of high-volume environmental sample sets.
- Integrated peristaltic pump system: Multi-channel compression-type pump with programmable rotational speed (0.1–100 rpm), enabling precise flow rate control (±0.5% repeatability) and long-term stability under continuous operation.
- High-fidelity photometric detection: Tungsten-halogen light source (340–1100 nm spectral output) coupled with 10-mm optical path flow cell and low-noise, blue-enhanced photodiode detector; achieves absorbance linearity over 3 orders of magnitude (0.001–2.0 AU).
- On-board dilution module: Programmable serial dilution capability for automatic preparation of calibration standards and real-time dilution of out-of-range samples—ensuring full dynamic range coverage without manual intervention.
- Digital signal acquisition: High-resolution 24-bit analog-to-digital converter with >100 dB dynamic range and <0.001 AU baseline noise—optimized for trace-level detection in complex matrix interferences.
Sample Compatibility & Compliance
The AJ-1000 is validated for direct analysis of raw and filtered water samples—including surface water, groundwater, wastewater effluent, drinking water, and biological extracts—without pre-concentration or derivatization in most standard methods. It meets functional requirements for EPA Methods 353.2 (nitrate/nitrite), 365.4 (phosphorus), and 4500-NH₃ F (ammonia), and supports adaptations aligned with ISO 11905-1 (cyanide), ISO 6777 (volatile phenols), and ISO 11908 (anionic surfactants). System design adheres to GLP-compliant data integrity principles: all method parameters, run logs, calibration history, and audit trails are timestamped and user-identifiable per FDA 21 CFR Part 11 Annex 11 guidance.
Software & Data Management
The proprietary FIA Control Suite provides intuitive graphical method editor, real-time chromatogram visualization, peak integration with baseline correction algorithms (tangent skim, vertical drop), and automated QC flagging (e.g., drift >5%, RSD >3% across replicates). Raw data files (.fia) are stored in vendor-neutral HDF5 format with embedded metadata (instrument ID, operator, environmental conditions). Export options include CSV, PDF analytical reports, and LIMS-compatible XML templates. Software validation documentation (IQ/OQ/PQ protocols) and electronic signature support are available upon request for regulated laboratories.
Applications
The AJ-1000 delivers reliable performance across regulatory and research-driven applications: monitoring of nutrient loads (NH₄⁺-N, NO₃⁻-N, PO₄³⁻-P, TN, TP) in watershed management; rapid screening of toxicants (CN⁻, Cr⁶⁺, S²⁻, phenolic compounds) in drinking water safety programs; routine QA/QC testing in municipal water utilities; method development for emerging contaminants (e.g., microplastic-associated surfactants); and accredited testing in third-party environmental laboratories operating under ISO/IEC 17025:2017 accreditation scope.
FAQ
What regulatory standards does the AJ-1000 support for method validation?
It is pre-configured for ISO 15681-1, ASTM D7511, and EPA-approved colorimetric FIA methods—with full traceability to NIST-traceable reference materials and documented uncertainty budgets.
Can the system be integrated into an existing LIMS environment?
Yes—via HL7 or ASTM E1384-compliant interface modules; custom API integration is supported through documented REST endpoints.
Is the tungsten-halogen lamp field-replaceable without recalibration?
Yes—lamp replacement requires only a 5-minute warm-up and verification scan; no optical recalibration is needed due to built-in reference channel normalization.
What maintenance intervals are recommended for routine operation?
Pump tubing replacement every 3 months (or 500 hours), flow cell cleaning after 200 injections, and annual photometric verification using neutral density filters per ISO 9001 maintenance log requirements.
Does the system support kinetic or stopped-flow measurement modes?
No—the AJ-1000 operates exclusively in continuous-flow segmented injection mode; kinetic assays require external stop-flow accessories not included in standard configuration.
