⟍ı⋂ᑕο−ހ⅂∪ᒧ+х⊃Γ·L−⟍ހᒧހ·ހ−ހı⅂⟍⅂⟍ހ⊃ހ−⋂⟍⅂οހı⅂ᑕ⅂οހ−⅂ᑕ⋂⟍ހ⅂ހLހLހο⋂⟍ހLހ·⋂⟍⅂⟍ހᒧ⅂+⅂+ހı

  • 35 Posts
  • 2.59K Comments
Joined 3 年前
cake
Cake day: 2023年6月5日

help-circle

  • It’s a lab thing. In a regular kitchen, it hardly matters.

    However, in a lab, it definitely does when you have a lot of slurry to filter and you can’t wait all day. Many filtrations tend to take forever anyway, so speeding things up is always appreciated.

    If you wet the filter before starting the filtration, you’re removing air from the pores of the paper. This way, there’s an open channel for water to go through, and it’s possible to utilise a larger part of the available surface area. Filtration is limited by surface area, so bigger is better and more is more. A wet filter simply guarantees that you’ll get as much surface area as possible.














  • I wonder if anyone else has bumped into this issue. You find a video, start watching it, but you can’t comment or upvote. Well, no problem, just log into your instance, find the same video and… oh you can’t find it. It just isn’t there. Ok, well I guess I’ll just watch the video on the other instance and skip all the usual like comment and subscribe… oh… What if I want to see more of these, and I can’t subscribe. You know, this isn’t a trivial little annoyance after all.