Learn the techniques and proper use of a separatory funnel, which is a piece of lab glassware used to separate 2 immiscible liquids. #chemistry #chemistryeducation #chemistrylab
Old rubber tubing that was too cracked to still use for its original purpose. Like this: www.fishersci.com/us/en/catalog/search/products?keyword=rubber+tubing
I know with makimg biodiesel, some of the water used will be in the oil STILL, even if you run it thru a giant version of some like this which will generally be done with ordinary house plumbing parts and drums. So they heat the oil up later and it crackles a bit as the UNSEEN water evaporates from the oil. If you're doing lavender oil or essential oils or herbal products with something like this, keep that in mind. This is more like a mini settling tank where the last few drops are worth money because you're packaging the oils into tiny jars like they have at aromatherapy shops.
However long it'll take to dissolve. But these are often used for separating oil and water after steaming lavendar or whatever. This is the kind if stuff they use in manufacturing of essential oils after steaming the oil from the base product.
It totally depends on what chemicals you're using and how long everything take to separate. A lot of times there will be a visible distinction between the 2 layers so you can tell by looking closely.
Rather than trying to close it at exactly the right moment, I close a bit early, then do the 180 degree turn. It lets a very tiny amount of liquid out. I can more reliably stop at the correct time if the last several drops are release through the quick turns.
