... specially for fermentation.The characteristics are: safe, non-toxic, physiological inertness, non-sterilization, no affection on the microorganism growth, ... and reduce the cost. 3. Biological inertness, safe and non-toxic. 4. Decrease the use amount of vegetable oil, ... protection. Specifications:Appearance:white or light yellow latexIonic:non-ionicPH value:5-7Non-volatile matter:≥95Defoaming time(25C ...