Abstract: A method of making and loading a chromatography column includes selecting a column tube having an appropriate elasticity, and inner diameter and length, selecting appropriately sized flow distributors, a second flow distributor having a diameter that is larger than the inner diameter of the tube, permanently securing a first flow distributor to a first end of the tube, loading packing medium into the tube, inserting the second flow distributor into a second end of the tube to drive the second flow distributor into the tube to form a sealed chamber within the tube, adjusting the longitudinal position of the second flow distributor within the tube by applying a force to the second flow distributor until it reaches a desired location within the tube, and/or forcing liquid into the chamber to move the second flow distributor and permanently securing the properly positioned second flow distributor within the tube.

Abstract: A weight-lifting device and method of use therefor, wherein a user is able to securely grasp a weight-bearing bar, yet rapidly release and drop same from his/her person upon a sensation of fatigue or general muscle strain, and wherein the present invention further effectively transfers the weight or load carried by the weight-bearing bar to the user's wrist(s), without subjecting the user's wrist(s) to skin chafing, bruising, and/or potential impedance of proper blood flow.