Graduated borosilicate beakers (we only stock the smart ones!) that are easy to clean and are impervious to solvents.
The 50 ml beaker is ideally suited for measuring out small volumes of liquids, such as when making or using developers. I find this size particularly useful for flowing developer directly onto the plate and is easier to handle than a shot glass.
The 250 ml beaker that's a very handy size for mixing chemistry (such as developers) used with collodion and other alternative photographic processes. I don't think you can have too many of these lying around the darkroom!
The 600 ml beaker is a great size for mixing collodion formulas. This 1000 ml beaker is ideally suited for measuring and mixing larger volumes of liquids, such as mixing up a new batch of collodion or silver nitrate.
The 2000 ml beaker is ideally suited for measuring and mixing larger volumes of liquids, such as when mixing up a new batch of silver nitrate or fixer.
All beakers are borosilicate glass and are easy to clean and impervious to solvents.