Reddit reviews GSC International 4-2061 Vacuum Pump, with Gauge, 725mL Air Displacement
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Hand-operated vacuum pump with gauge removes moisture and air from tanks and containers to provide students with hands-on experience with the principles of physicsGauge provides readings in cm and inHg (inches of mercury)Displaces up to 725mL of air with 15mL pumping rate per strokeValve releases vacuumApproximate size 10 x 7 x 2 inches (H x W x D)
You really do need to get all these factors right for light colored oil. The colder the initial wash, the cleaner the material, the fresher the material, the quicker the wash... the less necessary filtration will be. That said, if you need to filter it, pouring through a coffee filter doesn't really do much for color.
Take it easy on the AC, it can color your solution a bit red. Use it sparingly just to remove the green.
Freeze everything. If you can run the filter inside a freezer, do it.
-Bentonite catches water soluble stuff like lipids and waxes.
-Activated Carbon bonds to the chlorophyll
-DE/Celite catches the AC which holds onto the chlorophyll, along with other smallest contaminants
-The filter disk retains all this material in the funnel
Edit: Here
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