There are two ingredients (A and B) that will be mixed in the reactor tank. Wait for READY signal to be on (when on, it signifies that QA Tank is ready for this batch). 2. To add the fixed amount of ingredient A to the mixing tank, VALVE_A needs to be on. To add the fixed amount of ingredient B to the mixing tank, VALVE_B needs to be on. Both VALVE_A and VALVE_B will be turned on for 10 seconds, then they need to be turned off automatically. 3. When material A is ready to be added, PULSE_A will be on. When material B is ready to be added, PULSE_B will be on. If the PULSE_A for material A (or PULSE_B for material B) is off, the material A cannot be added to the mixing tank even the VALVE_A is turned on. 4. After the materials are fed into the mixing tank, agitate and mix the materials at a high speed (500 rpm) by turning on the motor AGIT_ON_HS for 20 seconds. 5. After that, the agitate motor is then switch for a lower speed (200 rpm) by turning on the motor AGIT_ON_LS for 30 seconds.