Overflow protection insert used in laboratory for HPLC waste bottles comprises glass tube closed at top and having diameter such that it can be inserted into all commercial laboratory bottles

摘要

An overflow protection insert comprises a glass tube (1) closed at the top and having a diameter such that it can be inserted into all commercial laboratory bottles. The glass tube has a screw cap (3) with an inner seal to form a gas-tight seal with the bottle. Preferred Features: A level switch (6) locked by three notches in the glass (7) is arranged in the tube. An overflow tube (2) is inserted into the glass tube to fed waste liquids into the bottle.