48-Well Multiwell Tissue Culture Plates with Low-Evaporation Lids. BD Falcon™ Multiwell Plates are tissue-culture treated polystyrene, flat bottom, with low-evaporation lid. Treated plates employ vacuum-gas plasma tissue-culture treated polystyrene for uniform surface chemistry that promotes cell attachment, spreading and growth. Alphanumeric well identification and condensation rings. Sterilized by gamma irradiation, nonpyrogenic. Number of wells: 48. Shape: Flat-bottom. Color: Clear. 6/sp, 36/Case. BD Falcon™ #: 353230.