Compatibility with Harsh Chemicals in Plastic Trigger Sprayers

The compatibility of plastic trigger sprayers with harsh chemicals depends on the type of plastic used in the sprayer construction. Different plastics have varying resistance to chemical exposure. Common plastics used in trigger sprayers include polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET). Here's a general guide to plastic compatibility with harsh chemicals:
Polyethylene (PE):
Chemical Resistance: Polyethylene is generally resistant to a wide range of chemicals, making it suitable for various applications.
Common Uses: PE trigger sprayers are commonly used for household cleaning products, gardening chemicals, and certain industrial applications.
Polypropylene (PP):
Chemical Resistance: Polypropylene has good resistance to a broad range of chemicals, acids, and solvents.
Common Uses: PP trigger sprayers are often used for aggressive cleaning agents, automotive chemicals, and some industrial applications.
Polyethylene Terephthalate (PET):
Chemical Resistance: PET has moderate resistance to certain chemicals but may not be suitable for highly aggressive or concentrated chemicals.
Common Uses: PET trigger sprayers are commonly used for products like water, detergents, and other less harsh chemicals.
Fluorinated Plastics:
Chemical Resistance: Some trigger sprayers are made with fluorinated plastics (such as fluorinated polyethylene or fluorinated polypropylene) to enhance chemical resistance.
Common Uses: Fluorinated plastic trigger sprayers are used for aggressive chemicals and solvents, including some industrial and automotive applications.
Considerations for Compatibility:
Check Material Specifications:
Manufacturer Guidelines: Always check the manufacturer's specifications for the trigger sprayer to understand the type of plastic used and its compatibility with specific chemicals.
Concentration and Exposure Time:
Dilution and Exposure: The concentration of the chemical and the duration of contact with the plastic can affect compatibility. Some plastics may withstand short-term exposure but degrade with prolonged contact.
Testing Compatibility:
Sample Testing: Before widespread use, conduct a compatibility test by applying a small amount of the chemical to an inconspicuous part of the trigger sprayer and observe any changes over time.
Seals and Gaskets:
Check Components: Besides the main plastic components, consider the materials used for seals, gaskets, and other internal parts. These components may vary in their resistance to harsh chemicals.
Specialized Trigger Sprayers:
Chemical-Resistant Models: Some manufacturers offer trigger sprayers designed specifically for use with harsh chemicals. These may have enhanced chemical-resistant components.
Regular Maintenance:
Rinse After Use: After using harsh chemicals, rinse the trigger sprayer thoroughly with water to remove any residue. This can help prolong the life of the sprayer.