The amount of the blocking agent added is determined according to the result of the assay bath;
— During the production process, the pH value of the bath should be strictly controlled 5.3 ~ 5.8, the pH value is high, can be adjusted with dilute
acetic acid, the PH value is low, and adjusted with sodium acetate;
— When a small amount of sediment is generated at the bottom of the tank, the sealing is not affected, and the sediment at the bottom of the tank
is regularly cleaned to avoid affecting the sealing effect.