Wheaton media bottles are manufactured from Wheaton 400 borosilicate glass.

• Media lab bottles have 25 ml graduations and a writing patch

The glass conforms to USP Type I requirements and has a low alkali content to help prevent changes in pH. This also helps to maintain the purity of its contents. The pour lip and sloped shoulders facilitate pouring and cleaning. Pre-attached black phenolic screw caps with liner are attached to each bottle.