<P> Large graduated cylinders are usually made up of polypropylene for its excellent chemical resistance or polymethylpentene for its transparency , making them lighter and less fragile than glass . Polypropylene ( PP ) is easy to repeatedly autoclave ; however , autoclaving in excess of about 121 ° C ( 250 ° F ) ( depending on the chemical formulation : typical commercial grade polypropylene melts in excess of 177 ° C ( 351 ° F ) ) , can warp or damage polypropylene graduated cylinders , affecting accuracy . </P>
<P> Large graduated cylinders are usually made up of polypropylene for its excellent chemical resistance or polymethylpentene for its transparency , making them lighter and less fragile than glass . Polypropylene ( PP ) is easy to repeatedly autoclave ; however , autoclaving in excess of about 121 ° C ( 250 ° F ) ( depending on the chemical formulation : typical commercial grade polypropylene melts in excess of 177 ° C ( 351 ° F ) ) , can warp or damage polypropylene graduated cylinders , affecting accuracy . </P>
what is a graduated cylinder made out of
what is a graduated cylinder made out of
polypropylene
polypropylene