Single neck flask with a Standard Taper outer joint.
Tops are reinforced and tooled with a rounded finish, containing more glass to give them maximum mechanical strength
Body is thick-walled, with a long tapered outside contour to minimize chipping when struck or rubbed together
White ceramic enamel marking spot
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements