This is a makedo airlock; I couldn't make it shorter as the loop bends itself and air couldn't pass through.
1 Answer
It will probably be OK. The smaller the bore of the tube, the greater the tendency will be for any bubbles to push the liquid right out. You could just make a blow-off instead by submerging the venting end of the tube in a vessel full of water.
answered May 5, 2018 at 19:07
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I second the water vessel idea. That prevents insects like fruit flies from entering.– RobertMay 7, 2018 at 2:07
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1I agree. Just 1/2 fill the bottle and submerge the tube. Using a loop can easily blow out and go dry. May 7, 2018 at 2:59