Graduated bottles have a large opening, no-drip pour lip and sloping shoulders to facilitate pouring and cleaning. These bottles are widely used for mixing and storage of culture media, fixation and dehydrating materials. Bottles show approximate volume graduations, and have large frosted writing area.
Clear bottles are Wheaton '400' borosilicate glass. Low alkali content helps to prevent changes in pH and maintain purity of contents. Comes with "PTFE"-lined cap. Autoclavable.
Amber bottles are manufactured from borosilicate glass to protect light-sensitive samples. 125 ml-sized amber bottles are specifically made with Wheaton '500' borosilicate glass (64210-A).