A high-temperature fermentation manufacturing company in India monitors the liquid in the fermentation to promote the growth of microorganisms in the most suitable pH range and ultimately synthesize target metabolites. Therefore, the pH value needs to be strictly controlled during the fermentation process. Dissolved oxygen is an important parameter in microbial fermentation control, which directly affects the stability and production cost of fermentation production.On the one hand, controlling the dissolved oxygen in fermentation liquid can improve the growth and metabolism environment of microorganisms and effectively promote the accumulation of beneficial metabolites during the fermentation process. On the other hand, it can also save energy and reduce consumption, which is of great significance to the production of enterprises.Especially for high-density fermentation, improving the dissolved oxygen condition of fermentation liquid is the key factor to promote product synthesis.Therefore, fast and accurate online monitoring of numerical changes and timely adjustment of numerical values are a key factors for the final success of fermentation.

A sewage treatment plant, located in an industrial park in northern Vietnam, which had a daily treatment capacity of 200 cubic meters and was required to meet the 2011/BTNMT Class A standard, in order to ensure the highest efficiency of wastewater treatment, customers in the factory integrated the advanced monitoring system, continuously measure and analyze of the following key parameters to ensure the best performance:

According to the World Health Organization (WHO),water used by residents must be in contact with a solution with a residual chlorine concentration of ≥0.5 mg/L for at least half an hour in an environment with a pH value less than 8.0 to ensure the safety and reliability of water quality.This standard applies to drinking water directly from the tap.Residual chlorine is a water treatment agent used for disinfection, which can effectively prevent water-borne diseases.In water, residual chlorine can kill bacteria, viruses and other pathogens, ensuring the health and safety of water quality. The content of residual chlorine above 0.5mg/L is sufficient to maintain the health and safety of water quality.

Aquaculture is divided into freshwater aquaculture and mariculture(sea water), involves automated controlled farming through real-time water quality monitoring. It includes all cultivation of aquatic organisms such as fish, shellfish, crustaceans and seaweed.

A hydroponic vegetable company in Brazil who detects the pH and conductivity of the solution in the peristaltic pump to ensure that the concentration of chemical substances required during vegetable growth is within the appropriate range.For hydroponic vegetables, the suitable pH range is usually between 5.5-6.5, pH value that is too low will cause poor dissolution of metal ions in the nutrient solution, affecting the absorption of nutrients by vegetables; while pH value is too high may cause too many plant growth inhibitory substances in the nutrient solution, affecting the normal growth of vegetables.The conductivity control range is generally between 1.5ms/cm and 2.5ms/cm,during this range, the conductivity can reflect the concentration of ions in the solution,to ensure the normal growth of hydroponic vegetables.The specific conductivity control range needs to be determined according to different vegetable types, growth stages and environmental conditions.Generally, for vegetables with a long growth period, such as lettuce, celery etc., it is more appropriate to control the conductivity between 1.5ms/cm and 2.0ms/cm; for vegetables with a short growth period, such as Chinese cabbage, spinach etc. , it is more appropriate to control the conductivity between 2.0ms/cm and 2.5ms/cm.