... optical system, 3. grating post-spectro , 4.dual-wavelength measurement 5.Self-check function Features: ... method3. Temperature control system: PELTIER temperature control component, 25°C, 30°C, 32°C, 37°C, ... parameters adjustable8. User interface: User-friendly, man machine conversational operation9. Display: Large-screen LED display10. ... 9999μL (adjustable) HF-800A Semi-Automatic Biochemical Analyzer