If you do not have a vial or bottle with a screw cap, and be sure to provide a “blockage guarantee” when transported, for example, acid or antifreeze in the trunk of a car or sunflower oil in a shopping bag, use cord: knotted proposed method, it will securely hold a conventional tube of any vibrations.
Recommend to read
RUNNING ON WAVES
Caravels, clippers and Brigs have long become history, but the sail disappeared with a blue ocean space. It appears not only in the Sunny tropical latitudes, but in the harsh Antarctic...
THE DIODE IN THE BASEMENT
To extend the life of bulbs, plug in the power supply circuit is a semiconductor diode that lowers the voltage across the lamp. But where to place it! If this causes you difficulties,...
