Petridish disposable clean room sterile non vented-PS

Triple Vent Radiation Sterile: Vented dishes have elevated lid
which allows for good gas exchange and encourage
evaporation. This design is useful when the poured dishes are
to be used as soon as possible. The design of the dish
maintains steri lity because the particles would have to go up
and over the dish wall to get inside which is very rare in normal
airflow. PS confirming to US FDA 21 CFR. Non Vented
Radiation Sterile: Non vented dishes have lid which fits flatly
on the base resulting in less potential for external
contamination and significantly less evaporation rate. PS
confirming to US FDA 21 CFR.