Moonetto 6 Pack Pyrex 500mL Wide Mouth Graduated Round Reagent Media/Storage Lab Glass Bottle With GL80 Orange Polypropylene Screw Cap; scientific studies and storage at home. tough, larger neck opening, enviromental friendly, low coefficients of thermal expansion, biologicals and other liquid solutions for lab. permanent white enamel graduations from 100 mL to 500 mL, high quality