H1103 4-channel semi-automatic blood coagulation analyzer is specially designed for customers of rural hospital and community health center. Optical method, with cold light source, offers longer service life and lower test cost. Unique zero tracking technology prevents the interference of jaundice, hematolysis, and chyle. 2 ways of FIB test, PT based calculation and Clauss method, are provided. Varieties of calibration curves and sensitivities can be selected according to different situations. 37