Suitable capacity: the round media storage bottles can hold 100 ml of liquid and other objects, enough for you to use, and they are thick and tough for long time to use Package includes: you will receive 4 pieces storage glass bottles with GL45 screw cap in blue, which is a tightly sealed lid, the contents of the bottle will not drip, enough quantity for your daily use and replacement Graduation lines: there is white graduation lines on the glass bottles, marked every 20 ml, which is from 20 ml to 80 ml, helping you make more accurate measurements Screw cap: the blue screw cap can reduce the risk of liquid evaporation and exposure, made of polypropylene material, which is resistant to corrosion and high temperature, and the lid can be sterilized by high-pressure steam treatment at 140°C Quality materials: the borosilicate glass has nice fire resistance and nice strength, which also has no toxic side effects; Its thermal stability, water resistance, alkali resistance, and acid resistance are nicer than common glass
