Square bottles are easier to handle, take up less room on the shelf or in the autoclave (13% to 20%), and are perfect for mixing, sampling, and storing. White enamel graduations, a big marking point, and a glass ridge sculpted into the bottle to signify full capacity are among the features. A linerless, one-piece, autoclavable blue polypropylene plug seal cap with a drip-free pouring ring is included. The CS-CP45 series catalog contains a broad variety of alternative caps.