This part of ISO 11418 specifies the design, dimensions, material and requirements of screw-neck glass bottles for pharmaceutical preparations in liquid form (syrups). Screw-neck glass bottles are applicable to primary packs used in direct contact with a drug. This part of ISO 11418 is applicable to screw-neck glass bottles used in pharmacy. Together with the corresponding closure systems, they serve for packaging of pharmaceutical preparations which are not intended for parenteral use.