PMP. Transparent, with screw cap, PP. Ideal for use as a receiving vessel in titrations. Well suited for storage and cultivation of cell cultures. Far safer than glass flasks for use in incubator shakers due to the break resistance of plastic. Suitable for microwaves. To preserve markings, cleaning at no higher than 60 °C is recommended. PMP. Transparent, with screw cap, PP. Ideal for use as a receiving vessel in titrations. Well suited for storage and cultivation of cell cultures. Far safer than glass flasks for use in incubator shakers due to the break resistance of plastic. Suitable for microwaves. To preserve markings, cleaning at no higher than 60 °C is recommended.