PCR (polymerase chain reaction) plates and tubes are essential tools for molecular biology experiments. These plates and tubes are designed to hold small volumes of reaction mixtures for PCR amplification, which is a powerful technique used to replicate and amplify DNA sequences. PCR plates typically have 96 or 384 wells arranged in a grid pattern, while PCR tubes are cylindrical and come in different volumes. Both PCR plates and tubes are made from polypropylene or polyethylene, which are materials that are resistant to heat and chemicals. PCR plates and tubes also come in various colors, such as clear or white, to help researchers visualize the reaction mixtures during PCR amplification. The choice of PCR plate or tube depends on the specific experimental requirements, such as the volume of the reaction mixture and the number of samples being processed.