Glass syringe barrel and syringe

The glass syringe barrel has an at least partially conical upper portion and has a longitudinal axis, including a top end through which liquid can be ejected and a bottom end through which the plunger stopper can be pushed. Comprising (1) a tapered region having a first end and a second end, the first end corresponding to a top end of a glass syringe barrel, the tapered region having a length and an outer diameter at the second end; (2) a shoulder region having a first end and a second end, the first end being adjacent to the tapered region second end, the shoulder region outer contour comprising a concave and substantially arc-shaped region starting below the tapered region second end, an outer radius r1, and a convex and substantially arc-shaped region starting above the shoulder region second end, an outer radius r2; (3) a body region having a first end and a second end, the first end being adjacent to the shoulder region second end, the second end corresponding to the bottom end of the glass syringe barre