These 160mL PYREX® wide mouth bottle for easy measuring or filling. With cut-line graduation mark at 99± 1mL, and are used for general storage of solutions and tissue culture work. Phenolic cap with rubber liner will withstand sterilization (wet at 121°C). Meets the requirements for milk dilution bottles stated in the "Standard Methods for the Examination of Dairy Products", published by the American Public Health Association.