The TSHR auto injector, model AI 7000, is able to introduce semi-automatic liquid samples into the 7000 series Total Nitrogen, Total Sulfur, Total Chlorine analyzer. The compact design of the injector which is easy to install on the 7000 series model analyzer makes it an affordable solution for customers with limited number of liquid samples. The AI 7000 can fit a syringes of 10 to 100 uL.