The conical V-shaped bottom of plates with 384 wells is ideal for pelleting and maximum sample recovery. Plates with 96 wells feature an edgeless design with U-shape bottoms for optimal sample mixing. One plate, model 07904-31 features a space saving design, requiring 30-percent less space than standard models, and shallower wells with larger cross section, making it ideal for low-profile automated systems.

To reduce the risk of sample evaporation or contamination, deep well sealing mats (sold separately) should be used to provide an effective plug seal for individual wells.