Resmer™ manufacturing technology makes these racks retain performance in harsh lab environments. Useful in wide temperature range and good chemical resistance. Each hole has molded-in letters and numbers for easy sample identification. Stackable when empty or full. Autoclavable. Resmer™ manufacturing technology makes these racks retain performance in harsh lab environments. Useful in wide temperature range and good chemical resistance. Each hole has molded-in letters and numbers for easy sample identification. Stackable when empty or full. Autoclavable.