- Joined
- Nov 17, 2016
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I don't see where anyone said anything about a PES filter...Don't use PES filters!
FD said it best, a porcelain bunchner funnel is very difficult to keep sterile.
PVDF are the most suppierior
Nylon can have it's issues
Media bottle and filtration top.
My suggestion is to always use a 150ml top as the larger ones crack too much, you can do 500ml in a 150ml easily.
The only difference in a 150ml and the larger ones is the walls are taller.
The taller walls with more liquids in them make them weaker.
Think of a tree and it's base, then taller the less stable.
Also to be honest nylon sucks to uness you have 2 days to filter a 1000 ML and probably 50 filters membranes. Weather your using those membranes on a porcelain bunchner funnel or a glass bottle top filter with a fritted disk.
As far as filters go there is nothing better, faster or that lasts longer than a PVDF. Not just any old PVDF it has to be hydrophobic. Hydrophilic filter like shit. Kind of like a nylon which is also hydrophilic..
As far as regular bottle tops filters go. I mean yes if you want to order a case of 12 for the price you could get 100 PVDF membranes for and then like you said take the risk of them cracking. The only wise thing you said about that was filtering it into a media bottle and I'm guessing you meant a hybex media bottle.