Ailun General UV-300 Fully Automated UV Oil-in-Water Analyzer
| Brand | Ailun General / Qingdao Ailun |
|---|---|
| Origin | Shandong, China |
| Model | UV-300 |
| Instrument Type | Laboratory |
| Measurement Principle | Ultraviolet Spectrophotometry |
| Measurement Range | 0–50 mg/L |
| Detection Limit | 0.01 mg/L |
| Accuracy | ±2% |
| Spectral Resolution | 1 cm⁻¹ |
| Analysis Cycle Time | 5–10 min per sample |
Overview
The Ailun General UV-300 Fully Automated UV Oil-in-Water Analyzer is an integrated laboratory instrument engineered for precise, reproducible quantification of petroleum hydrocarbons (oil) in aqueous matrices using ultraviolet spectrophotometry—fully compliant with HJ 970–2018 (“Determination of Petroleum Hydrocarbons in Water by Ultraviolet Spectrophotometry”) and HJ/T 91–2002 (“Technical Specifications for Monitoring Surface Water and Wastewater”). Unlike conventional manual or semi-automated systems, the UV-300 implements end-to-end automation: from sample introduction through solvent-based liquid–liquid extraction (using n-hexane), phase separation, spectral measurement at 225 nm, to post-analysis cleaning and waste disposal. Its optical architecture features a stable deuterium lamp source, precision monochromator, and high-sensitivity photodiode array detector, calibrated traceably against NIST-traceable oil standards. Designed for regulatory-grade environmental laboratories, it delivers metrologically sound data suitable for compliance reporting under national water quality monitoring programs.
Key Features
- Fully automated workflow: automatic sample aspiration, n-hexane extraction, membrane-based water/interference removal, UV absorbance measurement, system rinsing, and waste discharge—eliminating manual handling of hazardous solvents.
- Rolling drum-type magnetic stirring extraction: provides uniform, turbulent mixing across heterogeneous aqueous–organic interfaces, achieving >96% extraction efficiency for C10–C40 aliphatic and aromatic hydrocarbons.
- Imported hydrophobic–oleophobic separation membrane: replaces traditional anhydrous sodium sulfate columns; resists clogging from suspended solids, emulsified organics, or biological matrix components; service life exceeds 100 extractions per membrane.
- Corrosion-resistant fluidic pathway: large-bore tubing and valves constructed from PTFE-lined, chemically inert polymers resistant to n-hexane, acidic/basic samples, and oxidizing agents—minimizing carryover and extending maintenance intervals.
- One-touch calibration: built-in certified UV oil standard filters enable rapid photometric verification without consumable reagents; supports both single-point validation and multi-point linear regression calibration protocols.
- 10.1-inch capacitive touchscreen interface: intuitive HMI with real-time status monitoring, method editing, audit trail logging, and USB export of raw spectra, calibration curves, and QC reports.
Sample Compatibility & Compliance
The UV-300 accommodates raw, filtered, or centrifuged water samples—including surface water, groundwater, wastewater effluent, cooling tower water, and industrial process streams—without pre-dilution or phase transfer. It meets method-defined matrix tolerance requirements for turbidity (<100 NTU), suspended solids (<100 mg/L), and salinity (<35 g/L). All operational sequences adhere to GLP principles: electronic signatures, time-stamped audit logs, user-access controls, and full data integrity per FDA 21 CFR Part 11 (when connected to validated LIMS). Instrument performance verification follows ISO/IEC 17025:2017 Annex A.2 guidelines for analytical instrument qualification.
Software & Data Management
Embedded firmware supports method-driven operation with customizable extraction parameters (stirring duration, settling time, solvent volume), QC flagging (e.g., absorbance drift >±0.005 AU, baseline noise >0.002 AU), and auto-rejection of out-of-range results. Raw spectral data (200–400 nm, 1 cm⁻¹ resolution) and processed concentration values are stored in .CSV and .PDF formats. Optional Ethernet or Wi-Fi connectivity enables remote diagnostics, centralized fleet management, and seamless integration with laboratory information management systems (LIMS) via ASTM E1384-compliant data exchange protocols.
Applications
- Environmental monitoring agencies conducting routine surveillance of petroleum hydrocarbon contamination in rivers, lakes, and coastal waters.
- Wastewater treatment plants performing influent/effluent compliance testing per national discharge permits.
- Petrochemical refineries and storage terminals verifying spill containment system integrity and leachate quality.
- Power generation facilities monitoring condensate purity and cooling water hydrocarbon ingress.
- Academic and research institutions executing method development studies, inter-laboratory comparisons, and environmental fate modeling.
- Third-party testing laboratories seeking CNAS or CMA accreditation for oil-in-water analysis under accredited test scopes.
FAQ
Does the UV-300 require daily recalibration?
No—calibration stability is verified prior to each batch using built-in reference filters; full multi-point calibration is recommended weekly or after maintenance.
Can the instrument handle highly turbid or saline samples?
Yes—samples up to 100 NTU turbidity or 35 g/L salinity are supported; optional centrifugation or filtration modules can be integrated upstream.
Is n-hexane consumption monitored and reported?
Yes—the system logs solvent usage per analysis cycle and triggers low-level alerts; average consumption is 25 mL per sample.
How is data integrity ensured during long unattended runs?
All measurements include timestamped metadata, digital signatures, and checksum-verified storage; audit trails are immutable and exportable.
What maintenance intervals are recommended for the separation membrane?
Membrane replacement is scheduled every 100 extractions or quarterly—whichever occurs first—based on pressure differential monitoring.
