These 160mL Pyrex® wide mouth bottles are for general storage of solutions and tissue culture work. Wide mouth bottle for easy measuring or filling. Uses a GPI 40-400 threaded phenolic screw cap (Cat.No. 1-9999-40) with rubber liner. Will withstand autoclaving 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.