Multi-channel quantitative control valve apparatus

A multi-channel quantitative control valve apparatus, comprising:

• a multi-channel membrane valve that comprises two (2) or more the first control valve comprising an inlet 30, the first air flow passage 10, the first inner space 80, a liquid flow passage 44 which connects said first inner space and said inlet, a liquid flow passage 45 which connects said the first inner space and said the second control valve 2, and a membrane inserted at said first inner space, the second control valve 2 comprising a syringe connector 51, the second air flow passage 20, the second inner space 81, a liquid flow passage 46 that connects said second inner space and said syringe connector, a liquid flow passage 45 that connects said second inner space and said first control valve, and a membrane inserted in the second inner space, and the third control valve comprising an outlet 70, the third air flow passage 21, the third inner space 82, a liquid flow passage 48 that connects said third inner space and said outlet, said liquid flow passage 47 that connects said the third inner space and said syringes connector, and membrane inserted at the third inner space;
• a syringe 50 which is connected to said syringe connectors 51 of said membrane valves;
• and
• a stepping motor 53 which operates a piston 52 of said syringe 50.