Acid and alkali resistant filter bags can be divided into the following types according to different materials:

1. Polypropylene acid-base resistant filter cloth bag: mainly used for filtration under acid-base conditions with pH values between 2-13, and has good chemical stability and corrosion resistance.
2. Polyester acid and alkali resistant filter bag: suitable for filtration under pH conditions between 4 and 9, with good mechanical strength and temperature resistance.
3. Polytetrafluoroethylene (PTFE) acid and alkali resistant filter bag: suitable for filtration under extreme acid and alkali conditions with pH values between 0 and 14, it has excellent chemical resistance and high temperature resistance.
4. Fluorine rubber acid and alkali resistant filter cloth bag: suitable for filtration under extreme acid and alkali conditions with pH values between 0 and 14, with good chemical stability and high temperature resistance.
5. Polyether ester acid and alkali resistant filter bag: suitable for filtration under pH conditions between 5-9, with good tensile strength and temperature resistance.
6. Neoprene rubber acid and alkali resistant filter cloth bag: suitable for filtration under pH conditions between 3 and 12, with excellent acid and alkali resistance and mechanical strength.