The use of industrial grade phosphoric acid needs to pay attention to the following points:

Safe operation: Before using industrial phosphoric acid, you must have relevant safety knowledge and understand the characteristics and hazards of industrial phosphoric acid. After contact with industrial phosphoric acid, immediately rinse the affected area with plenty of water and seek professional medical help. During the operation, personal protective equipment must be worn, such as protective glasses, earplugs, protective clothing, etc.
Accurate weighing: When using industrial phosphoric acid, it must be weighed strictly in accordance with the required amount to avoid excessive use or too little use. Accurate weighing can ensure the purity and concentration of industrial phosphoric acid, so as to better play its role.
Storage and transportation: Industrial phosphoric acid should be stored in a dry, cool, well-ventilated place, away from fire and heat sources. During transportation, attention should be paid to prevent leakage and splashing, and special containers should be used for packaging and transportation.
Usage: When using industrial phosphoric acid, it should be prepared according to the required concentration and proportion. According to different uses, it can be used for soaking, washing, dissolving, blending and other operations. For example, in the electroplating industry, industrial phosphoric acid can be used for pre-electroplating treatment; in the metallurgical industry, industrial phosphoric acid can be used for rust removal and surface treatment.
Disposal: After the use of industrial phosphoric acid, it should be disposed of in accordance with relevant environmental regulations. For waste liquid and waste residue, it should be classified and separated, and then handed over to a professional waste treatment company for treatment.
In short, the use of industrial grade phosphoric acid needs to follow the principles of safety, accuracy and standardization to ensure the effective play of its role, while avoiding harm to the environment and human body.