Syringe Filter Question

[Cratos]

Last night I started brewing a patch of 100ml Deca using .2um OVDF filter 25mm and left the last 20ml loaded in the syringe with the filter attached, covered the pin, and out it in my drawer. Thumbs were killing me and I had work early in the morning. Today when I continued the flow rate was considerably faster or it felt that way.


So, 2 questions:

• Is it ok to leave the syringe and filter over night and use it again the next day or would a new filter be required?

• I recall up to 100ml can be used before having to switch filters but not certain of it. Is that accurate?

 

[Iron Vett]

Last night I started brewing a patch of 100ml Deca using .2um OVDF filter 25mm and left the last 20ml loaded in the syringe with the filter attached, covered the pin, and out it in my drawer. Thumbs were killing me and I had work early in the morning. Today when I continued the flow rate was considerably faster or it felt that way.


So, 2 questions:

• Is it ok to leave the syringe and filter over night and use it again the next day or would a new filter be required?

• I recall up to 100ml can be used before having to switch filters but not certain of it. Is that accurate?

Sorry but this is uncharted territory for me because I never reuse a filter after it’s been in contact with the solvents and oil. They’re too cheap to take a chance and screw anything up.

 

[egonormical1010]

If it filtered faster then you may want to use caution because the filter could have been trashed by the solvents. I recently had a nylon filter do the same thing. It actually melted the plastic and made the funnel sticky.

 

[ickyrica]

I think it's advised against. Solvents eat away at membranes, long term isn't good. The fact it filtered quicker than the previous day is a testament to that. I'd refilter at the very least.