How to ensure safety when spraying corrosive or harmful chemicals?

In the fields of agricultural disinfection and industrial cleaning, trigger sprayers are widely used because of their convenient operation. However, when it comes to strong acids, strong alkalis or highly toxic chemical liquids, the risk of leakage from ordinary sprayers may cause burns, poisoning or even explosion accidents. How to achieve safety protection in high-risk scenarios through technological innovation and standardized operation?
1. Material innovation: the "first line of defense" against corrosion
Traditional sprayers are made of ordinary plastic or metal materials, which are prone to cracks and deformation when in contact with corrosive liquids. The new generation of safe sprayers uses:
Chemically inert materials: such as high-density polyethylene (HDPE) and polytetrafluoroethylene (PTFE), which have strong corrosion resistance to concentrated sulfuric acid, sodium hydroxide, etc. (passed ASTM D543 chemical compatibility test).
Multi-layer composite structure: inner layer of anti-corrosion material + outer layer of impact-resistant shell to avoid rupture due to external impact.
2. Sealing system upgrade: blocking leakage risk
Statistics from the US Occupational Safety Administration show that 67% of chemical spraying accidents are caused by sealing failure. Safety sprayers achieve "zero leakage" through a triple protection design:
Double seal valve structure: The main valve controls the flow of liquid, and the auxiliary valve automatically closes the nozzle after releasing the trigger to prevent residual liquid from dripping.
Spring reset technology: The built-in stainless steel spring ensures that the trigger is reset immediately to avoid accidental spraying.
Corrosion-resistant seal ring: Made of fluororubber (FKM), it can withstand liquid erosion in the pH range of 0-14.
III. Standard operation: from personal protection to emergency treatment
Even if the equipment meets the standards, operational errors may still cause risks. It is recommended to follow the following process:
Pretreatment stage: Wear nitrile gloves, goggles and chemical protection aprons; confirm that the sprayer passes the 30PSI pressure test (in accordance with ISO 8317 standards).
Operation stage: Keep the nozzle above the liquid level to avoid inversion; use intermittent spraying when pressing the trigger to reduce the loss of continuous pressure on the seal.
Emergency treatment: If a leak occurs, immediately activate the flushing valve (equipped with some high-end models) to dilute the chemical and neutralize it according to the SDS safety data sheet.