Whatman syringe filters

Well I ordered the ones above before I posted. So is it a total no go on these since they are considered to be a pre-filter?
 
Well I ordered the ones above before I posted. So is it a total no go on these since they are considered to be a pre-filter?

Honestly, it’s your gear and your butt. But personally I would use what I know is the right product to use.
 
I see one end has the ability to screw onto the barrel, but the other end doesnt look like it has a way to put the needle on it by screwing. Or does it? Do you need a different needle then the regular ones you use for pinning?
 
I see one end has the ability to screw onto the barrel, but the other end doesnt look like it has a way to put the needle on it by screwing. Or does it? Do you need a different needle then the regular ones you use for pinning?

Nah a regular needle will slip on
 
I see one end has the ability to screw onto the barrel, but the other end doesnt look like it has a way to put the needle on it by screwing. Or does it? Do you need a different needle then the regular ones you use for pinning?
The screw on fitting (called a Luer lock) is only needed on the high pressure side, it ain't needed in the low pressure side as it just flows relatively effortlessly to the needle.
 
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