PCR0258, PCR0258 & PCR0258: clear cap mats made of silicone rubber, a material that is highly durable to high temperatures, and so can be used to seal storage plates being used for high-temperature storage to protect samples from evaporation, DNase/RNase and pyrogen-free, pierceable
PCR0254: white TPE sealing cap mats for sealing storage plates to protect samples from evaporation, non-pierceable