· Capacity of Each Bottle: 100 mL, permanent white enamel graduations from 20 mL to 80 mL, accurate scales <br> · Borosilicate Glass: thick, tough, high quality, low coefficients of thermal expansion, resistant to thermal shock, high chemical resistance in corrosive enviroments <br> · GL45 Screw Cap: Blue GL45 screw cap, tight seal, drip-free, cap up to 140℃; Autoclavable: Bottle up to 120℃, reusable, enviromental friendly, transparent, easy labeling <br> · Glass bottles fit for storage of media, biologicals and other liquid solutions for lab, experiment, chemistry, scientific studies and storage at home <br> · GUARANTEE: All of our products are refundable, please contact us DIRECTLY if you have any questions, NOT the Amazon after sale services!