Frequently Asked Questions
Learn more on what Sterlitech Corporation has to offer. Find answers to your questions about our filtration products here!
Polypropylene (PP) FAQ
What is the contact angle angle of polypropylene (PP) membrane filters?
<p><span data-sheets-value="{"1":2,"2":"The polypropylene membrane is hydrophobic and typically has a water contact angle of about 100deg or more."}" data-sheets-userformat="{"2":11137,"3":{"1":0},"10":0,"11":4,"12":0,"14":{"1":2,"2":10797812},"16":8}">The polypropylene membrane is hydrophobic and typically has a water contact angle of about 100deg or more.</span></p>
What methods can be used to sterilize the polypropylene (PP) membrane filters?
<p><span data-sheets-value="{"1":2,"2":"Sterlitech polypropylene (PP) membrane filters maybe sterilized using compatible chemical agents such as\u00a0ethylene oxide (EtO) or formalin."}" data-sheets-userformat="{"2":11137,"3":{"1":0},"10":0,"11":4,"12":0,"14":{"1":2,"2":10797812},"16":8}">Sterlitech polypropylene (PP) membrane filters maybe sterilized using compatible chemical agents such as ethylene oxide (EtO) or formalin.</span></p>
What are the advantages of polypropylene (PP) membrane filters?
Polypropylene (PP) membrane filters are naturally hydrophobic and provide reliable performance for venting and gas filtration applications where aqueous liquids should be repelled. PP membranes are also a cost-effective alternative to PTFE for users who don’t require PTFE’s higher chemical resistance, while still offering good durability and consistent filtration performance.
What is the thickness of the polypropylene membranes?
The thickness of Sterlitech polypropylene membrane filters varies by pore size:
0.1 µm polypropylene: 75–110 µm
0.2 µm polypropylene: 140–180 µm
0.45 µm polypropylene: 140–180 µm
