When sourcing an Aniline Point Tester, you must prioritize ASTM D611 or ISO 2977 compliance to ensure international standardization. Key technical features include automatic heating and cooling rate control, a high-precision PT100 temperature sensor with an accuracy of ±0.1°C, and a photoelectric detection system for automatic determination of the phase separation point. For high-volume labs, look for models with dual-test positions and integrated cooling systems (like Peltier or water-cooled) to reduce cycle times.