Paterson Plastic Graduate - 22oz(600ml)The well known Paterson Graduates are made from transparent polystyrene moulded under strictly controlled conditions to ensure total accuracy. They are of a cylindrical laboratory design giving uniform widely separated markings, calibrated in metric, Imperial and US scales, which are very easy to read. They are resistant to most photographic chemicals, and come in five sizes, each with accurate, easy to read markings. 22oz (600ml)