Luer stopcocks are used to provide independent Go with the flow Regulate of each and every individual port when used along side vacuum manifolds. They’re constituted of solvent resistant high-grade Nylon, are reusable and will also be readily cleaned the usage of organic solvents such as methanol or acetone.
Regulate Go with the flow rates all the way through SPE
Give a boost to method reproducibility
Instant isolation from vacuum reduces accidental tube drying
For Independent Go with the flow Regulate