Why should we clean the fermenter regularly?
When the fermenter is in use, due to the influence of the environment or other reasons, the surface of the fermentation materials and containers of the fermenter are attached to microorganisms, bacteria and other impurities and other pollutants, so that the materials and containers in the fermenter can not be fermented properly and affect the fermentation process. In order to make the experiment in the tank accurate and smooth, it is necessary to clean the fermenter regularly.
 
The ways to clean the fermenter
According to the different characteristics of microorganisms, fermenter cleaning is mainly divided into organic acid cleaning, alkali solution cleaning and ultrasonic cleaning.
 
1. Organic acid
Organic acids are mainly hydrochloric acid, sulfuric acid and phosphoric acid. They are generally used to clean the grease on the surface of the equipment, and also have the effect of sterilization and disinfection.
Organic acid cleaning is easy to operate and has better effect. However, the concentration of organic acid is high, which will make the surface of the equipment have a strong irritating smell.When cleaning the surface of the equipment with organic acid, if the concentration is too high, it will lead to serious corrosion of the equipment, and even perforation and other phenomena; if the concentration is too low, can not achieve the cleaning effect. Therefore, when cleaning with organic acid, according to the actual situation to determine the optimal concentration.
 
2. Alkali solution
Alkali solution cleaning is a traditional method, mainly using sodium hydroxide.According to the equipment material and cleaning requirements to determine the appropriate concentration, generally 2%-4%.Since alkaline solutions have a certain corrosive effect on the equipment, appropriate measures should be taken to control parameters such as alkaline concentration, temperature and pH value.
 
3. Ultrasonic
The ultrasonic energy is used to impact the inner wall of the fermenter to strip off the attached impurities and microbial debris.
 
Regardless of the method used, be sure to rinse the vessel well with water after cleaning to ensure thorough removal of the cleaning agent. Also ensure that the cleaned vessel and piping are dry to avoid residual moisture that can lead to fermentation failure.

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