1) With "U", "V", flat bottom 2) Well surface is uniform, smooth and free from striation 3)detachable,8 holesx12 rows 96 well detachable Elisa plate (8 holesx12 rows) : 1.ISO13485& CE Certificate 2.PS material,with smooth surface,transparent, EO or E-beam sterilie 3.customer logo & OEM welcomed 4.Disposable plastic petri dish is made of transparent medical grade polystyrene. 5.Plastic Elisa plate is sterilized by gamma radiation and certified nonpyrogenic, RNase and DNase free. 6.The disposable Elisa plate is designed with easy-grip serrated edge for easy fetch 7.Elisa Plate provide vents for air exchange, 8.circles at the feet base are to prevent sticking together and steady to stack. 9.OEM service and Logo printed is welcome