Photoelectric U-tube Method – Accurate Aniline Point Determination
Aniline point is a key indicator for evaluating the aromatic content of petroleum products, especially hydrocarbon solvents and lubricating base oils. It directly relates to oil solubility and rubber compatibility. The DFYF-133 Aniline Point Tester is designed in full compliance with GB/T 262 and ISO 2977. Using an innovative U-tube combined with photoelectric detection, it automatically determines the aniline point – offering high stability, excellent accuracy, and simple operation. This makes it an ideal choice for aniline point testing in laboratories.
Key Advantages
✔ Dual-standard compliance – globally accepted
Meets both GB/T 262 and ISO 2977, ensuring results are internationally recognized. Suitable for import/export inspection, arbitration analysis, and scientific research.
✔ Photoelectric automatic endpoint detection – no more visual judgement
Based on the U-tube principle, when the sample-aniline mixture reaches the aniline point, the solution changes from cloudy to clear. A photoelectric sensor automatically captures this change in light transmittance and determines the endpoint – eliminating observer error and delivering excellent repeatability.
✔ U-tube circulation mixing – uniform and thorough
Equal volumes of aniline and sample are introduced, then continuously circulated from the lower branch through a flat chamber via a stirrer. This ensures even temperature distribution and complete reaction, leading to more reliable measurements.
✔ Wide temperature range – suits diverse oil types
Temperature control range: 0 °C to 150 °C, covering everything from light solvents to heavy lubricating base oils.
✔ Compact and stable – reliable bench-top performance
Space-saving design with direct electric heating (heating power 40 W). Total input power only 80 W – energy-efficient and stable temperature ramping.
✔ High repeatability and accuracy
Mature instrument design with rigorously selected key components ensures low long-term drift, giving consistent and dependable laboratory data.
Technical Specifications (Reference)
Parameter | Value |
Power supply | AC220V, 50 Hz |
Input power | 80 W |
Temperature control range | 0 °C ~ 150 °C |
Heating method | Direct electric heating |
Heating power | 40 W |
Detection principle | U-tube + photoelectric effect |
Applicable standards | GB/T 262, ISO 2977 |
Target Customers
Quality control & R&D departments in petrochemical companies and lubricant base oil manufacturers
Suppliers of solvent oils, aromatic oils, white oils, etc.
Third-party testing agencies and import/export inspection laboratories
Laboratories evaluating oils for rubber, paint, and sealing industries
University and research institute labs focused on petroleum product analysis
Why Choose the DFYF-133?
Advanced detection – Photoelectric automatic aniline point determination replaces traditional visual inspection, significantly improving repeatability and accuracy.
International standard compliance – Meets GB/T 262 and ISO 2977, satisfying client requirements for standardised methods.
U-tube circulation design – Ensures thorough mixing and uniform temperature field for more representative results.
Wide temperature coverage – 0 °C to 150 °C, suitable for both light and heavy oils.
Compact & energy-efficient – Only 80 W power consumption, small footprint, ideal for bench-top use.
Robust and durable – Reliable performance, simple maintenance, suitable for continuous long-term operation.
Contact Us
Let the DFYF-133 help you precisely determine the aniline point of petroleum products and enhance your oil quality evaluation capabilities.
�� Request detailed quotes, technical specifications, and standard operating procedures:
�� Sales email: [lovecarlos2000@gmail.com]
�� 24-hour hotline: [+86 15941156556]
Photoelectric U-tube method – Accurate aniline point measurement – Compact, stable, globally accepted