Glass vial with diagonal cut line

A glass vial having a main body, a branch pipe portion and an intermediate neck portion disposed therebetween, said neck portion containing indentation portions which are off-set relative to each other and a cut line provided at the intermediate neck portion for cutting the branch pipe portion of the vial from said main body thereof, said cut line being diagonally oriented with respect to a horizontal reference line which is normal to the central axis of the main body of the vial, said diagonal orientation of the cut line being positioned by connecting the innermost portions of said off-set indentations with said cut line.